Chapter 16, Problem 30PE

(a)

Interpretation Introduction

Interpretation:

For a solution of $0.0010M\text{ NaOH}$, value of $\text{pH}$ and $\text{pOH}$ has to be calculated.

Concept Introduction:

The concentration of ${\text{H}}^{+}$ decides the acidity in solution and concentration of ${\text{OH}}^{-}$ decides the basicity in solution.

$\text{pH}$ is defined as concentration of hydrogen ion. It also explains about the acidity of solution.

$\text{pOH}$ is defined as the concentration of hydroxide ion. It also explains about the basicity of solution.

(b)

Interpretation Introduction

Interpretation:

For a solution of $0.125M\text{ HCl}$$\text{pH}$ and $\text{pOH}$ has to be calculated.

Concept Introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

For a solution of $0.0250M{\text{ HC}}_6{\text{H}}_5\text{O}$, $\text{pH}$ and $\text{pOH}$ has to be calculated.

Concept Introduction:

Equilibrium constant for ionization of weak acid is called ionization constant $K_a$. It is ratio of concentration of products to concentration of reactants.