Problem: What is the pH of a solution that has an acetic acid concentration of 0.050 M and a sodium acetate concentration of 0.075 M?A 4.92B. 9.30C. 7.50D. 1.30E. 1.12

FREE Expert Solution

We’re being asked to calculate the pH of a solution that has an acetic acid concentration of 0.050 M and a sodium acetate concentration of 0.075 M.


A solution that contains a weak acid and its conjugate base is a buffer solution. The pH of a buffer solution can be determined using the Henderson-Hasselbalch equation.

pH=pKa+log (conjugate baseweak acid)


Given solution:

The solution is composed of 0.050 M acetic acid and 0.075 M sodium acetate

 acetic acid (CH3COOH) is a weak acid
 the anion in sodium acetate (NaCH3COO) is the conjugate base

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Problem Details

What is the pH of a solution that has an acetic acid concentration of 0.050 M and a sodium acetate concentration of 0.075 M?

A 4.92

B. 9.30

C. 7.50

D. 1.30

E. 1.12

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Buffer concept. You can view video lessons to learn Buffer. Or if you need more Buffer practice, you can also practice Buffer practice problems.