Estimate the pH and Fraction (in terms of percentage) CH3COOH molecules deprotonated in 0.15 M CH3COOH ​

Answers

Answer 1

The pH of the 0.15 M [tex]CH_3COOH[/tex] solution is approximately 2.38. and around 2.9% of the [tex]CH_3COOH[/tex] molecules in the 0.15 M solution are deprotonated.

Acetic acid ([tex]CH_3COOH[/tex]) is a weak acid that only partially dissociates in water to form [tex]H^+[/tex] ions and [tex]CH_3COO^-[/tex] ions. To estimate the pH and fraction of [tex]CH_3COOH[/tex]molecules deprotonated in a 0.15 M [tex]CH_3COOH[/tex]solution, we can use the following equations and approximations:

The dissociation constant for acetic acid (Ka) is 1.8 x 10^-5.

The initial concentration of [tex]CH_3COOH[/tex] is equal to its concentration at equilibrium, since it only partially dissociates.

The concentration of [tex]H^+[/tex] ions is equal to the concentration of [tex]CH_3COO^-[/tex] ions at equilibrium, since the dissociation reaction involves a 1:1 ratio of [tex]H^+[/tex] ions to [tex]CH_3COO^-[/tex] ions.

Using these approximations, we can set up an equilibrium expression for the dissociation of [tex]CH_3COOH[/tex] :

[tex]Ka = [H^+][CH_3COO^-]/[CH_3COOH][/tex]

We also know that the initial concentration of [tex]CH_3COOH[/tex] is 0.15 M. Let x be the concentration of [tex]H^+[/tex] ions and [tex]CH_3COO^-[/tex] ions at equilibrium. Then:

[[tex]H^+[/tex]] = x

[[tex]CH_3COO^-[/tex]] = x

[[tex]CH_3COOH[/tex]] = 0.15 - x

Substituting these values into the equilibrium expression and solving for x, we get:

Ka = x^2 / (0.15 - x)

1.8 x 10^-5 = x^2 / (0.15 - x)

x = 0.0042 M

The pH can be calculated using the formula:

pH = -log[[tex]H^+[/tex]]

pH = -log(0.0042)

pH = 2.38

Therefore, the pH of the 0.15 M [tex]CH_3COOH[/tex] solution is approximately 2.38.

To estimate the fraction of [tex]CH_3COOH[/tex] molecules that are deprotonated, we can use the equation:

Fraction deprotonated = [tex][CH_3COO^-] / [CH_3COOH][/tex] x 100%

At equilibrium, the concentration of [tex]CH_3COO^-[/tex] ions is equal to the concentration of [tex]H^+[/tex] ions, which we calculated to be 0.0042 M. The concentration of [tex]CH_3COOH[/tex] at equilibrium is 0.15 - 0.0042 = 0.1458 M. Substituting these values into the equation, we get:

Fraction deprotonated = 0.0042 / 0.1458 x 100%

Fraction deprotonated = 2.9%

For more question on pH   click on

https://brainly.com/question/172153

#SPJ11


Related Questions

balance the redox reaction in alkaline medium & identify the oxidizing & reducing agents

I- + MnO4- ——> IO3- + MnO2

Answers

The balanced redox equation of the reaction is given below:

I⁻ + 2 MnO₄ + H₂O → IO₃⁻ + 2 MnO₂ + 2 OH⁻

The oxidizing agent is MnO₄ while the reducing agent is I⁻.

What are redox equations?

Redox equations are equations in which oxidation and reduction reactions occur together.

Redox reactions can take place in alkaline or acidic mediums.

The balanced redox equation of the reaction is given below:

I⁻ + 2 MnO₄ + H₂O → IO₃⁻ + 2 MnO₂ + 2 OH⁻

The oxidizing agent is MnO₄ while the reducing agent is I⁻

In conclusion, a balanced redox equation is one in which the atoms and the change in oxidation state is equal on both sides of the reaction.

Learn more about redox equations at: https://brainly.com/question/27239694

#SPJ1

please help me with this question as soon as possible

Answers

Answer:

nah what questionExplanation:

how much is 5 moles of lithium phosphide in grams

Answers

Answer:

we are given that mass of lithium four spade that is equal to 77.7 grams

15. When traveling through a smoke-filled area, a person must be able
distance of at least
in order to safely reach a fire exit.
O A. 10 feet
B. 12 feet
C. 4 feet
D. 8 feet

Answers

When traveling through a smoke-filled area, a person must be able to have distance of at least 4 feet in order to safely reach a fire exit. That is option C.

What is a smoke-filled area?

Smoke-filled area is an enclosed area that is filled with smoke gas that is usually made up of carbon monoxide.

The smoke-filled area is usually caused by

Fire out break

Burning of plastics or chemical products

Release of fuming gases.

When there is smoke-filled area die to fire out break, there are some guidelines to follow to safely reach the fire exit early enough.

The importance of these guidelines include the following:

enable rescuers to navigate a scene more quickly,

identify risks and hazards,

locate safety points,

determine the safest way in and out of a building, and

map out evacuation routes.

The affected individual should get down and crawl while taking short breath through the nose because cleaner air is nearest to the floor.

Learn more about distance here:

https://brainly.com/question/7243416

#SPJ1

Which of these compounds is the ester formed from the reaction of acetic acid and 1-propanol? O 1
O 2
O 3
O 4
O 5

Answers

The ester formed from the reaction of acetic acid and 1-propanol is O3, which is propyl acetate.

What is ester of acetic acid ?

The chemical compound ethyl acetate, also known as ethyl ethanoate or EtOAc or EA, has the formula C4H8O2 and is an organic compound. This clear liquid is used to decaffeinate tea and coffee as well as in glues and nail paint removers. It has a distinctive sweet scent akin to pear drops. The ester of ethanol and acetic acid, ethyl acetate is produced in huge quantities for use as a solvent.

Due to its affordability, low toxicity, and pleasant smell, ethanol acetate is mostly employed as a solvent and diluent. It is frequently utilized, for instance, to clean circuit boards and in some nail polish removers (acetone is also used). This solvent is used to decaffeinate tea leaves and coffee beans. Additionally, it serves as a hardener or activator in paints. Fruits, colognes, and confections all contain ethyl acetate. In perfumes, it swiftly evaporates, leaving the fragrance on the skin.

To know more about ester of acetic acid visit:

https://brainly.com/question/16831573

#SPJ4

Which of the following arranges the bonds in order of decreasing bond length?

Answers

The order of decreasing bond length is; C- P > C - N > C=N. Option B

What is bond length?

A chemical bond is formed when two compounds combine together. We know that the strength of a bond is shown by the bond length and the bond order. Clearly, bonds that have shorter bond lengths tend to be stronger than longer bonds that have a longer bond distance.

This explains why triple bonds are shorter and stronger bonds. This stems for the high s contribution (50%) in the formation of the bond. Therefore, the order of decreasing bond lengths is single bonds > Double bonds > triple bonds.

Now applying this background to the case in point, we can see that the decreasing order of bond energy must have to do with increasing bond order and decreasing bond distance.

Hence, the order of decreasing bond length is; C- P > C - N > C=N.

Learn more about bond order:https://brainly.com/question/16526043

#SPJ1

For any spontaneous process, universe entropy intensifies is known as the __________ law of thermodynamics.

Group of answer choices

fourth

second

tenth

Answers

For any spontaneous process, universe entropy intensifies is known as the second law of thermodynamics.

What is entropy?

Entropy is defined as the degree of randomness or disorderliness of a system.

The entropy of a system generally increases for any spontaneous process.

This is according to the second law of thermodynamics.

In conclusion, the entropy of a system is the a measure of randomness of the system.

Learn more about entropy at: https://brainly.com/question/21578229

#SPJ1

Caprylic acid is an 8-carbon saturated fatty acid. Draw the structure of caprylic acid. Draw the molecule on the canvas by choosing buttons from the Tools (for bonds), Atoms, and Advanced Template toolbars. The single bond is active by default. Include all hydrogen atoms.

Answers

Caprylic acid is a saturated molecule with eight electrons and the COOH functional group.

What about hydrogen atoms?

The initial element and primary component of stars, hydrogen, makes up nine out of every ten atoms in the cosmos. Helium makes up the other 10% of all atoms. Already 100 percent of that. On a cosmic scale, the remaining elements of the periodic table—Elements 3 through 118, lithium through ununoctium—barely register.

What makes hydrogen so crucial?

Hydrogen may be utilized to heat our homes and places of work in addition to powering vehicles and producing energy. To reach net zero, it will be crucial to reduce our carbon emissions significantly.

To know more about hydrogen atom visit:

https://brainly.com/question/29695801

#SPJ4

hydrogen bonds between the orange and red strands are not shown but are implied by the model. t/f

Answers

"hydrogen bonds between the orange and red strands are not shown but are implied by the model" - True

What is hydrogen bonds?

When a hydrogen atom bound to a highly electronegative atom is present close to another electronegative atom with a single pair of electrons, a hydrogen bond forms between the two molecules. This unique sort of dipole-dipole attraction is known as a hydrogen bond. Between molecules, there are intermolecular forces.

The unequal distribution of the electron between a hydrogen atom and a negatively charged atom is the source of hydrogen bonding. While a stable electron pair requires two electrons, hydrogen in a bond still only has one electron.

Thus, the given statement is true.

To know more about hydrogen bonds refer to:

https://brainly.com/question/1426421

#SPJ4

At 1755 oC the equilibrium constant for the reaction: 2 IBr(g) I2(g) + Br2(g) is KP = 0.748. If the initial pressure of IBr is 0.00465 atm, what are the equilibrium partial pressures of IBr, I2, and Br2? p(IBr) = . p(I2) = . p(Br2) = .

Answers

From the calculation, the equilibrium partial pressure of IBr is 6.5 * 10^-4 atm while that of I2 and Br2 is 0.002 atm.

What is the equilibrium pressure?

We must set up the ICE table as shown hence;

              2 IBr(g) < ------> I2(g) + Br2(g)

I              0.00465            0        0

C                  - 2x                + x      + x

E            0.00465 - 2x       + x      + x

Kp = pI2. pBr2/pIBr^2

pI2 = pBr2 = x

0.748 = x^2/  0.00465 - 2x

0.748 (0.00465 - 2x) = x^2

3.5 * 10^-3 - 1.496x = x^2

x^2 + 1.496x  - 3.5 * 10^-3 = 0

x=0.002 atm

Hence;

For IBr =   0.00465 - 2(0.002) = 6.5 * 10^-4 atm

For I2 and Br2 = 0.002 atm

Learn more about  equilibrium constant:https://brainly.com/question/10038290

#SPJ1

What is the molecular formula for the compound?
Enter the answer as YwBaxCuyOz where w, x, y, and z represent the coefficients.

Answers

The general formula for many YBCO compounds, also known as Y123, is YBa2Cu3O7x. However, materials with other Y: Ba: There are Cu ratios like YBa2Cu4Oy (Y124) and Y2Ba4Cu7Oy (Y247).

What is a Compound?

A compound is a substance composed of two or more distinct chemical elements arranged in a predetermined ratio in chemistry. Chemical bonds that are difficult to break form when the elements combine and react with one another. Atomic electron sharing or exchanging results in the formation of these bonds.

compound Include in the list Share When a problem is compounded, something is added to make it worse, like pouring water on a grease fire. The combination is a compound word; A compound is a mixture or combination of at least two things.

A substance in science that is made by chemically joining two or more distinct elements. Table salt (NaCl), which is made from the elements sodium and chloride, and water (H2O), which is made from the elements hydrogen and oxygen, are examples of compounds.

To know more about the Compound, visit:

https://brainly.com/question/13516179

#SPJ1

When the soil is saturated in a gently sloping area, any additional rainfall in the area will most likely

Answers

When the soil is saturated in a gently sloping area, any additional rainfall in the area will most likely become surface run off.

What is super saturation?

Super saturation occurs with a chemical solution when the concentration of a solute exceeds the concentration specified by the value equilibrium solubility.

Additional water into the soil will cause the soil to be super saturated and eventually runs off due to the steepness of the area.

Thus, when the soil is saturated in a gently sloping area, any additional rainfall in the area will most likely become surface run off.

Learn  more about surface run off here: https://brainly.com/question/21926984

#SPJ1

liquid octane(CH3)(CH2)6CH3) reacts with gaseous oxygen gas(O2) to produce gaseous carbon dioxide(CO2) and gaseous water(H2O). If 5.18 g of carbon dioxide is produced from the reaction of 3.43 g of octane and 19.1 g of oxygen gas, calculate the percent yield of carbon dioxide. Round your answer to 3 significant figures.

Answers

The percent yield of carbon dioxide will be 49.0 %.

Percent yield

First, let's look at the equation of the reaction:

[tex]2C_8H_1_8 + 25O_2 -- > 16CO_2 + 18H_2O[/tex]

The mole ratio of octane to oxygen is 2:25.

Mole of 3.43 g octane = 3.43/114.23 = 0.03 mol

Mole of 19.1 g oxygen = 19.1/32 = 0.60 mol

Thus, octane is limiting.

Mole ratio of octane to carbon dioxide = 2:16.

Equivalent mole of carbon dioxide = 0.03 x 8 = 0.24 mol

Mass of 0.24 mol carbon dioxide = 0.24 x 44.01 = 10.5624 grams

Percent yield of carbon dioxide = 5.18/10.5624 = 49.0 %

More on percent yield can be found here: https://brainly.com/question/17042787

#SPJ1

When 50 electrons drop from energy level 4 to energy level 2, how many photons of light are given off?

1 photon

100 photons

2 photons

50 photons

Answers

The number of photons given off will be 50 photons.

To find the answer, we need to know about the plank's equation.

How to find the number of photons emitted?We have the expression for energy of a single electron in eV as,

                     [tex]E=-13.6(\frac{1}{(n_f)^2}- \frac{1}{(n_i)^2})eV\\[/tex]

We have,

                     [tex]n_f=4\\n_i=2\\N=50[/tex]

Substituting values, we get,

                  [tex]E=-13.6(\frac{1}{(4)^2}- \frac{1}{(2)^2})eV\\\\E=-13.6*-0.188=2.55eV[/tex]

For N electrons,

                [tex]E=50*2.55eV=127.5eV[/tex]

We have the plank's equation,

                            E=nhf

From this, the number of photons emitted from 50 electrons will be,

                    [tex]n=\frac{E}{h*f} =\frac{127.5*1.67*10^{-19}J}{(6.63*10^-34)Js} \\[/tex]

To find n, we have to find the frequency f. For that, we have the equation,

                       [tex]\frac{1}{wave length}=R_H(\frac{1}{(n_i)^2}- \frac{1}{(n_f)^2})\\\\1/wv= 1.1*10^5(\frac{1}{(2)^2}- \frac{1}{(4)^2})=20625cm^{-1}.\\wavelength=486nm.[/tex]

Thus, frequency will be,

                 [tex]f=\frac{c}{wavelength} =\frac{3*10^8}{486*10^{-9}} =6.172*10^{14}s{-1}[/tex]

Then, the number of photons will be,

                       [tex]n=\frac{E}{h*f} =\frac{127.5*1.67*10^{-19}J}{(6.63*10^-34)Js*6.17*10^{14} s^{-1}} \\\\n=52.05 photons[/tex]

Thus, we can conclude that, the number of photons given off will be 50 photons.

Learn more about the photons here:

https://brainly.com/question/15946945

#SPJ1

• An alkane with the formula C5H12 undergoes chlorination to give only one product with the formula C5H11Cl. What is the structure of this alkane? •​

Answers

Answer:

When an alkane undergoes a halogenation reaction, the majority of the products will add the halogen to the most substituted and most stable carbon. In this case, this would likely be the third carbon (middle).

Key:

Leftmost molecule = C₅H₁₂

Rightmost molecule = C₅H₁₁Cl

*Not pictured = HCl (another product)

Stibnite, Sb2S3, is a dark gray mineral from which antimony metal is obtained. If you have 2.00 kg of an ore that contains 15.1% antimony, what mass of Sb2S3 (in grams) is in the ore?

Answers

Answer: 421.264 grams.

Explanation: This problem is essentially testing you on your knowledge of percent mass except with one extra step.

We are given that there are 2kg or 2000 grams of ore. This ore is %15.1 Antimony. We can multiply 2000 grams by .151 to find the amount of Antimony which is 302 grams. We don't want the amount of Antimony though, we want the amount of Stibnite. To find the amount of Stibite, we can multiply the amount of Antimony by 1/(the percent mass of Antimony in 1 molecule of Stibnite. To find the percent mass we divided 2(molar mass of Sb) by the molar mass of one molecule of Stibnite. This calculation is 2(121.67)/339.69. This is the percent mass of Antimony in Stibnite. We take the inverse because we want to find out how much Stibite there is per amount of Antimony. We do 1/(((2(121.67))/339.69) and multiply that by 302 to find the total amount of Sb2S3.

Hope this helps!

C3H8 (g) + 5 O2 (g) → 3 CO2 (g) + 4 H2O (g) Which atoms are being oxidized and which are being reduced?

Answers

C₃H₈ (g) + 5 O₂ (g) → 3 CO₂ (g) + 4 H₂O oxygen atoms are being oxidized and propane are being reduced.

What is redox reaction ?

The term redox reaction is defined as when oxidation and reduction takes place simultaneously.

The loss of electron is called as oxidation, it increases the oxidation state. The gain of electron is called as reduction, it decreases the oxidation state.

The oxidation state of the oxygen is decreased hence it gets reduced while that of propane oxidation state is increased hence it gets oxidized.

Thus, C₃H₈ (g) + 5 O₂ (g) → 3 CO₂ (g) + 4 H₂O oxygen atoms are being oxidized and propane are being reduced.

To learn more about redox reaction, follow the link;

https://brainly.com/question/13293425

#SPJ1

What is the mass of 3.40 x 10^35 formula units of KCl??

Answers

Answer: it is either 34x or it is 0 im not sure how you do the math or what your question is asking exactly sorry

Explanation:

Mass of 3.40 x 10^35 formula units of KCL is calculated to be 4.20 * 10^13.

What is formula unit?

In chemistry, formula unit is the empirical formula of ionic or covalent network solid compound which is used as an independent entity for stoichiometric calculations. It is also the lowest whole number ratio of ions represented in ionic compound.

Convert molecules into moles.  

6.02 x 1023 molecules = 1 mole

1 = (1 mole)/(6.02x1023 molecules)

(3.40x10^35 molecules KCL)*(1 mole KCL)/(6.02x1023 molecules KCL)

5.647 *10^11 moles Na2SO4

Molar mass of KCL = 74.55 g/mol

Mass of KCL=  5.647 *10^11  * 74.55

Mass of KCL = 4.20 * 10^13

To know more about formula unit, refer

https://brainly.com/question/24712181

#SPJ1

Which of the following rules is applicable for balancing a chemical equation?
Change only the coefficients
Add the coefficients and change the subscripts
Change only the subscripts
Change the coefficients and the subscripts

Answers

Answer:

A.) Change only the coefficients

Explanation:

An equation is balanced when there is an equal quantity of each type of element on both sides of a reaction. When balancing an equation, the only way to manipulate the amounts of each element is by changing the coefficient values. The coefficients alter the amount of each molecule in the reaction.

The subscripts cannot be altered. If you were to change the subscripts, you would be altering the amount of atoms in a particular molecule.

An analyst prepared a sucrose solution by weighing 1kg of water and add 1.5kg of sucrose. what is the concentration of the resultant solution in mass percent

Answers

The concentration of solution in mass percent is 60%.

What is mass percentage?

Mass percentage refer to the percentage of solute present in solution.

The concentration of substance can be expressed in mass percent.

So, we can write,

Mass percent = mass of solute / mass of solution x 100.

Mass of solution = mass of solute + solvent.

Here, sucrose is the solute and water is solvent.

Mass of solute is 1.5Kg and mass of solvent is 1Kg.

Mass of solution = 1.5 + 1 = 2.5 Kg.

Mass percent = 1.5/2.5x100

So, Concentration of solution in mass percent = 60%.

For a detailed study of mass percent refer the given link https://brainly.com/question/13896694.

#SPJ1.

Which equation obeys the law of conservation of mass? H2(g) + O2(g) → H2O(g)

H2(g) + O2(g) → H2O(g) +4He(g)

2H2(g) + O2(g) → 2H2O(g)

H2(g) → H2O(g)

H2(g) + O2(g) → 2H2O(g)

Answers

Answer:

2H2(g) + O2 -> 2H2O

Explanation:

According to the law of conservation of mass, mass cannot be created nor destroyed in a chemical formula.

The only chemical reaction of the five options that follows this law is

2H2(g) + O2 -> 2H2O because the mass of the compounds stays the same before the reaction (arrow) and after.

Before reaction (reactants) we have:

2 (H2) = 4H

1 (O2) = 2O

After reaction takes place (products) we have:

2 (H2O) = 4H and 2O

and so mass is conserved.

Answer: its the 3rd option

Explanation: on edge hope this helps

b) Explain why Carbon (IV) oxide and water are removed before liquefaction of air​

Answers

Answer:

Before air is liquefied, water vapor and carbon dioxide are removed, because these substances solidify when cooled and would clog the pipes of the air liquefaction plant.

How many liters of fluorine gas are needed to
form 919 L of sulfur hexafluoride gas if the
following reaction takes place at 2.00 atm
and 273.15 K:
S(s) + 3F₂(g) → SF. (g)?

Answers

2756.1 liters of fluorine gas is needed to produce 919 liters of sulfur hexafluoride.

Given data:

The volume of SF₆ = 919 L

Pressure = 2 atm

Temperature = 273.15 k

The volume of fluorine required =?

Balance chemical equation:

   S (s) + F₂(g)    →  SF₆(g)

First of all, we will calculate the moles of SF₆.

 PV = nRT

 n = PV/RT

 n = 2. atm× 919L / 0.0821 L. atm. mol⁻¹. K⁻¹  × 273.15 K

 n = 1838 atm. L/ 22.43 L. atm. mol⁻¹

 n = 81.9 mol

81.9 moles of SF₆ will produce.

Now we will compare the moles of SF₆ and fluorine from the balanced chemical equation.

  SF₆:   F

  1     :    3

 81.9  :   3/1 × 81.9  = 245.7 moles

Now we will calculate the volume of fluorine.

PV = nRT

V  = nRT / P

V= 245.7 mol × 0.0821 L. atm. mol⁻¹. K⁻¹  × 273.15 K / 2 atm

 V = 5512.2 / 2

 V = 2756.1 L

2756.1 liters of fluorine gas are needed to produce 919 liters of sulfur hexafluoride.

To know more about volume refer to:  https://brainly.com/question/18241314

#SPJ1

An ideal gas in a closed container initially has a volume V and Temperature T the final tempera is 5/4T and the final pressure is 2P what is the final gas

Answers

Answer:

[tex]V_2 = \frac{5V}{8}[/tex]

Explanation:

I am assuming you are saying what is the final volume of the gas

Known :

Initial volume (V1) = V

Initial temperature (T1) = T

Final temperature (T2) = 5/4 T

Initial pressure (P1) = P

Final pressure (P2) = 2P

Wanted: Final volume (V2)

[tex]\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}\\\frac{PV}{T} = \frac{(2P)V_2}{(5/4)T}\\\frac{V}{1} = \frac{(2)V_2}{5/4}\\5/4V = 2V_2\\\\V_2 = \frac{5V}{8}[/tex]

Balance the following reaction: NH3 + I2 --> N2I6 + H2

Answers

The balanced equation will be [tex]2NH_3 + 3I_2 -- > N_2I_6 + 3H_2[/tex]

What are balanced equations?

They are chemical equations that obey the law of conservation of atoms.

In other words, they are equations in which the number of atoms before and after reactions are the same.

Thus, the balanced equation for the reaction will be [tex]2NH_3 + 3I_2 -- > N_2I_6 + 3H_2[/tex]

More on balancing equations can be found here: https://brainly.com/question/7181548

#SPJ1

The diagram shows the setup of an experiment. A few observations of the experiment are listed in table below the diagram.

Experimental Observations

1. Color of solution turned blue
2. Shiny hair like crystals deposited on the copper strip

Which of the following is the correct explanation for one of the given observations?

Observation 1 is a result of silver ions moving into the solution.

Observation 2 is a result of nitrate ions moving into the solution.

Observation 1 is a result of silver ions changing their oxidation state.

Observation 2 is a result of silver ions changing their oxidation state.

Answers

Answer:

Observation 2 is a result of silver ions changing their oxidation state.

Explanation:

Silver is reduced and forms silver precipitate. Observation 1 is a result of coppe being oxidized and forming copper nitrate

Be sure to answer all parts. Outline a synthesis of the following Wittig reagent from Ph3P and an alkyl bromide.

Answers

The Wittig reaction is a chemical reaction used to synthesize alkenes from aldehydes or ketones using a phosphonium ylide (also known as a Wittig reagent) as the nucleophile.

What is Wittig reagent?

When an aldehyde or ketone reacts chemically with a triphenyl phosphonium ylide (often referred to as a Wittig reagent), an alkene and triphenylphosphine oxide are produced. This reaction is known as the Wittig reaction or Wittig olefination.

The synthesis of the Wittig reagent from Ph3P and an alkyl bromide can be outlined as follows:

1. Start with Ph3P (triphenylphosphine) and an alkyl bromide (R-Br) in a suitable solvent, such as dichloromethane (CH2Cl2).

2. Add a strong base, such as n-butyllithium (n-BuLi) or potassium tert-butoxide (t-BuOK), to the mixture. This will deprotonate Ph3P to give the phosphonium cation Ph3P+.

3. The alkyl bromide will act as a nucleophile and will react with the Ph3P+ cation to give the phosphonium ylide intermediate: Ph3P+-R-Br.

4. The intermediate will then lose a molecule of Br- to give the final Wittig reagent which is a phosphonium ylide : Ph3P=CHR

5. This reagent can be used as a nucleophile in the Wittig reaction to form an alkene.

Note that this reaction is not suitable for all types of Alkyl Bromides, and some may not be able to form the ylide intermediate or may form by products.

To know more about Wittig reagent visit:

https://brainly.com/question/14525721

#SPJ4

The second order reaction A → Products takes 13.5 s for the concentration of A to decrease from 0.740 M to 0.319 M. What is the value of k for this reaction?

Answers

The rate constant of the second order reaction is 0.137 M-1s-1.

What is the rate constant?

For the second order reaction we can write;

1/[A] = kt + 1/[A]o

[A]o = initial concentration

[A] = final concentration

k = rate constant

t = time

Now;

1/0.319 = 13.5k + 1/ 0.740

1/0.319 - 1/0.740 = 13.5k

3.13 - 1.35 = 13k

k = 3.13 - 1.35/13

k = 0.137 M-1s-1

Learn more about second order reaction:https://brainly.com/question/12446045

#SPJ1

Lactic acid has a pKa of 3.08. What is the approximate degree of dissociation of a 0.35 M solution of lactic acid?
A) 1.1%
B) 2.2%
C) 4.8%
D) 14%
E) none of the above

Answers

Your answer would be C, 4.8%.

The molecular orbitals depicted below are derived from 2p atomic orbitals in F2+, (a) Give the orbital designations. (b) Which is occupied by at least one electron in F2+,? (c) Which is occupied by only one electron in F2+,?

Answers

a) Orbital designation of F₂⁺ is shown below:

b) σ(2p) is occupied by at least one electron in F₂⁺

c) π*(2p) is occupied by only one electron in F₂⁺

What is Molecular orbital diagram?

The molecular orbital diagram can be used to show the bonds inside a diatomic molecule. The magnetic characteristics of a molecule and their ionization-related changes can be determined using MO diagrams. The number of bonds shared between the two atoms, or the bond order of the molecule, is likewise shown by them.

The structure A represents an anti-bonding MO of side-wise overlapping of 2p-orbital. Thus designation of this orbital diagram is: π*(2p).

The structure B represents a bonding MO of head-on overlapping of 2p-orbital. Thus designation of this orbital diagram is: σ(2p)

The structure C represents a bonding MO of side-wise overlapping of 2p-orbital. Thus designation of this orbital diagram is: π(2p)

The structure D represents an anti-bonding MO of head-on overlapping of 2p-orbital. Thus designation of this orbital diagram is: σ*(2p)

a) Thus, orbital designation of F₂⁺ is shown below:

b) σ(2p) is occupied by at least one electron in F₂⁺

c) π*(2p) is occupied by only one electron in F₂⁺

To know more about orbital designation refer to:

https://brainly.com/question/5558334

#SPJ4

The complete question is as follows:

The molecular orbitals depicted below are derived from 2p atomic orbitals in F₂⁺, (a) Give the orbital designations. (b) Which is occupied by at least one electron in F₂⁺? (c) Which is occupied by only one electron in F₂⁺?

Other Questions
disaster management includes all the end-user activities designed to secure data availability before a physical disaster or a database integrity failure.T/F the voyage of the beagle circled the globe. this voyage lasted Practices companies use to recruit, train, and retrain the most capable people they can find involve all of the following except Multiple Choice O rotating people through jobs that span functional and geographic boundaries to gain experience in a variety of settings. O striving to retain talented, high-performing employees via promotions, salary increases, performance bonuses, stock options and equity ownership, fringe-benefit packages, and other perks. O making the work environment stimulating and engaging so that employees will consider the company a great place to work. O putting employees through short-term training programs, but focusing on the top 10 percent and providing them with challenging, interesting, and skill-stretching assignments. O coaching average performers to improve their skills and capabilities, while weeding out underperformers and bench warmers. The Marlboro Man advertising campaign was extremely successful and ran from 1954 to 1999. Why would such a campaign not resonate as well with todays consumers?a. Western movies were more popular in the 1950s than they are today.b. Consumers are not as aware of the risks of smoking.c. It lacks authenticity about masculinity. why can it be said that the daughter of henry viii and anne boleyn, elizabeth, was predisposed to favor protestantism? compare and contrast two major forms of city government in texas if, at some level of output, total planned expenditures are less than real gross domestic product (gdp), for the system dx dt = x 3 xy2 , dy dt = 2x 2y y 3 construct a liapunov function of the form ax2 cy2 which shows the origin is asymptotically stable. 16) the main goal of sustainable development is toa) involve more countries in global conservation efforts.b) use only natural resources in new building construction. c) use natural resources such that they do not decline over time.d) reevaluate and re-implement management plans over time. Compute the 2021 AMT exemption for the following taxpayers. If an amount is zero, enter "0". Click here to access the exemption table. a. Bristol, who is single, has AMTI of $708,200. Her AMT exemption is____ b. Marley and Naila are married and file a joint tax return. Their AMTI is $1,121,600. Their AMT exemption is_____ alance the following redox reaction in acidic solution: mno4(aq) so2(g)mn2 (aq) so42(aq) a yound double slit has a slit separation 2.50 on which a monochormatic 4g sugar cube (sucrose: C12H22O11) is dissolved in a 350 ml teacup filled with hot water. What is the molarity of the sugar solution. How many grams of magnesium are required to produce 40 grams of boron how do you think increasing or decreasing the coppers initial temperature would affect the finaltemperature? what is the length of an -helix made of 40 residues? what frequency frecede is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and receding from it? provides the author's last name and page number for paraphrased or quotedinformation within the body of a report or essay.36. A footnotebibliographyWorks Citedgageparenthetical citation Given PU-UR, and the radius of the circle is 55, find x and UT.10. x.11. UT.Show work Our brain tags sensory information with ______ based on a quick evaluation of whether that information supports or threatens our innate drives