Chapter 15.4, Problem 15.10P

Interpretation Introduction

Interpretation:

The preparation of ${\text{NaHCO}}_{\text{3}}{\text{ - Na}}_{\text{2}}{\text{CO}}_{\text{3}}$ buffer that as $\text{pH = 10}\text{.40}$ should be explained.

Concept Introduction:

Henderson–Hassel Balch Equation:

The $\text{pH}$ of the buffer solution is given by Henderson–Hassel Balch Equation and it is,

$\text{pH}{\text{=pK}}_{\text{a}}\text{+}\text{log}\frac{\text{[base]}}{\text{[acid]}}$

Buffer solution:

The mixture of weak acid with its conjugate base solutions to give a buffer solution.

The buffer solution has a constant $\text{pH}$ because of common ion effect.