Question

Addition of sodium acetate to 0.1 M acetic acid will cause

• A. Increase in $pH$
• B. Decrease in $pH$
• C. No change in $pH$
• D. Change in $pH$ that cannot be predicted

Answer 1

The correct option is A Increase in $pH$

Addition of sodium acetate in acetic acid solution, due to common ion ${NH}_4^{+}$, the supressed, ionisation of acetic acid so concentration of $\left[H^{+}\right]$ decreases. Hence, pH of solution increases.