Chapter 6, Problem 6E.7E

(a)

Interpretation Introduction

Interpretation:

The $pHof0.15M$ of aqueous solution of the monosodium salt of citric acid has to be calculated.

Concept Introduction:

The $pH$ of a solution of an amphiprotic salt is given below.

  $pH=\frac{1}{2}\left(p{K}_{a1}+p{K}_{a2}\right)\mathrm{......}\left(1\right)$

The above equation is valid if $S\gg K_w/K_{a2}andS\gg K_{a1}$, where, $S$ is the initial concentration of the salt.

(b)

Interpretation Introduction

Interpretation:

The $pHof0.075M$ of aqueous solution of the disodium salt of citric acid has to be calculated.

Concept Introduction:

Refer to part (a).