Posted by james bond on Tuesday, March 15, 2011 at 12:41am.
Use the Henderson-Hasselbalch equation to find the initial pH.
Then complete the ICE chart I've started below for the second part and substitute the final mmoles into the HH equation. (which may help you on the first part, too).
begin = 20 mL x 0.1M = 20 mmoles CH3COOH.
begin = 25 mL x 0.1M = 25 mmoles CH3COONa
add 5mL x 0.1M NaOH = 5 mmoles OH-
.......CH3COOH + OH^- ==> CH3COO- + H2O
begin....20......0.........25.......0
add .............5...................
react....-5.....-5........+5........+5
final....
Iam not quite clear about how to find the Ph before the additon NaoH... could you please show me how to solve...
Related Questions
chemistry - 20 ml of 0.1 M Acetic acid and 25 ml of 0.1 M Sodium Acetate are ...
school - What is the pH of 0.1 M formic acid solution? Ka=1.7„e10-4? What ...
chemistry - You want to make an acetic acid/acetate buffer, pH 3.8, with a ...
College Chemistry - A buffer solution contains 0.120M acetic acid and 0.150M ...
chem buffer - When the following solutions are mixed, which will act as a ...
Chemistry - You want to prepare a pH=4.50 using sodium acetate and glacial ...
chem pH - calculate the pH when 10 mL of .511 M sodium acetate and 20.00 mL of 0...
Chemistry - You want to prepare a pH=4.50 buffer using sodium acetate and ...
Chemistry - Assignment  Calculate the pH, pOH, [H+], and [OH&#...
chemistry - 30 ml of 0.1M sodium acetate and 15 ml of 0.1 M hydrochloric acid ...
For Further Reading
