Chapter 15, Problem 15.65SP

Interpretation Introduction

Interpretation:

$\text{pH}$ of the $\text{0}{\text{.20 M NaHCO}}_{\text{3}}\text{ and 0}{\text{.10 M Na}}_{\text{2}}{\text{CO}}_{\text{3}}$ buffer solution should be calculated and $\text{pH}$ of the solution should be explained, when it is diluted by factor of 10.

Concept Introduction:

Henderson–Hassel Balch Equation:

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

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

Buffer solution:

The equal concentrations of mixture of conjugate acid-base solutions is known as buffer solution.

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