Chapter 8, Problem 8.108QP

Interpretation Introduction

Interpretation:

The $\text{pH}$ of a buffer solution with given concentration has to be calculated.

Concept Introduction:

pH:  The $\text{pH}$ of a solution is defined as the negative logarithm of the molar concentration of the hydronium ion.

    $\text{pH}\text{=}\text{-log}{\text{[H}}_{\text{3}}{\text{O}}^{\text{+}}\text{]}$

Buffer solution:  It consists of components that resist the change in $\text{pH}$ of the solution when either acids or bases are added.  The buffer solution is a combination of weak acid or base and its conjugate acid or base.

    ${\text{[H}}_{\text{3}}{\text{O}}^{+}\text{]}\text{=}\frac{[weakacid]K_a}{[conjugatebase]}$