Find the pH of a 2.2 M sodium acetate (CH3COONa) solution.

Answered: Find the pH of a 2.2 M sodium acetate…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

Find the pH of a 2.2 M sodium acetate (CH₃COONa) solution.

Expert Solution

Step 1

Salt hydrolysis is a reaction in which one of the ions from a salt reacts with water, forming either an acidic or basic solution.

The expression of pH for a salt made of weak acid and strong base is given by,

$pH = \frac{1}{2} {pK}_{w} + \frac{1}{2} {pK}_{a} + \frac{1}{2} log C$

where ${pK}_{w}$ is negative logarithm of $K_{w}$ ( $10^{- 14}$ ), ${pK}_{a}$ is the negative logarithm of $K_{a}$ and C for concentration to calculate the pH.

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