Chemistry
posted by Matthias .
This is a question I am presently doing right now which I found in my homework. I am quite sure that in (a) I have to use the Hasselbach equation though I am not sure how to work it out. If anyone knows any of the answers, and how you got to them, please feel free to share. Any help is greatly appreciated :)
CH3COO (aq) + H2O (l) <==> CH3COOH (aq) + OH (aq)
A 0.01mol dm^3 solution has a pH of 8.87
a. Calculate [H+] and [OH] in the solution
b. Find [CH3COOH] in the solution.
c. Calculate the acid dissociation constant of CH3COOH.
Thanks! :)

a.
pH = 8.87
8.87 = log(H^+)
Solve for (H^+), then
pH + pOH = pKw = 14
You know pH and pKw, solve for pOH and
pOH = log(OH^) which lets you solve for OH.
b.
This is a hydrolysis problem.
You know OH^ from part a. That = (CH3COOH).
c.
Kb for CH3COO^ = (Kw/Ka for CH3COOH)
(Kw/Ka) = (CH3COOH)(OH^)/(CH3COO^)
You know Kw, CH3COOH, OH, and CH3COO^(hat's 0.01 in the problem), solve for Ka.
Respond to this Question
Similar Questions

math
Not quite sure how to do this question What is the simple interest on a $14,500 loan at 9% interest for 5 years any help would be great thanks I have to show all of my work I just need to be pointed in the right direction thanks 
computers
I was wondering if someone could please help me for homework I need to submit math answers using Microsoft Equation Editor, Math type or similar software what if I don't have any of them what can I use I am not sure if I have any of … 
chemistry
I'm reviewing for a test tomorrow, and I was wondering about this question. Convert 55 mi/gal to meters/liter. I'm not sure how to go about it, though when I tried it I got 89000.0m/4L. But, I'm not sure if that is right. 
Calculus
I finished the first question with no problem. It was something like: Find the points at which f(x) [insert three equations for left right and in between here] is discontinuous. At each of these points, is f cont. from the right or … 
Chemistry
I did a chem lab and now im not sure if im doing my calculations right .. Please help? 
Chemistry
I did a chem lab and now im not sure if im doing my calculations right .. Please help? 
Chemistry
This is a question I am presently doing right now which I found in my homework. I am quite sure that in (a) I have to use the Hasselbach equation though I am not sure how to work it out. If anyone knows any of the answers, and how … 
Math
A line has a slope of 6/7 and a yintercept of 5. Which of the following is the equation of the line? 
Chemistry
I have the question find the balanced equation when Fe(s) is placed in HClO4 (aq). How do I balance this redox reaction? 
chemistry
i have a homework packet that i am struggling with can you please help me my first question is i have to finish the following equation to balance it out my question is 3Fe3O4+blankAl→blankAl2O3+blankFe now i tried and i got 3Fe3O4+2A=2Al2O3+2Fe …