Chapter 18, Problem 18.97P

(a)

Interpretation Introduction

Interpretation:

The species has to be given when aqueous solutions of ${\text{CH}}_{\text{3}}{\text{COOH and CH}}_{\text{3}}\text{COONa}$ contain the same species (Except for the ${\text{Na}}^{\text{+}}$ spectator ion).

Concept introduction:

The acid ($\text{HA}$) gets dissociated gives hydronium ion (${\text{H}}_{\text{3}}{\text{O}}^{+}$) and anion (${\text{A}}^{-}$).

For the general acid HA,

  $\text{HA}\left(\text{aq}\right)+{\text{H}}_{\text{2}}\text{O}\left(\text{l}\right)\rightleftharpoons {\text{H}}_{\text{3}}{\text{O}}^{+}\left(\text{aq}\right)+{\text{A}}^{-}\left(\text{aq}\right)$

(b)

Interpretation Introduction

Interpretation:

The reason has to be explained for the $\text{0}{\text{.1 M CH}}_{\text{3}}\text{COOH}$ is acidic and $\text{0}{\text{.1 M CH}}_{\text{3}}\text{COONa}$ is basic.

Concept introduction:

The acid ($\text{HA}$) gets dissociated gives hydronium ion (${\text{H}}_{\text{3}}{\text{O}}^{+}$) and anion (${\text{A}}^{-}$).

For the general acid HA,

  $\text{HA}\left(\text{aq}\right)+{\text{H}}_{\text{2}}\text{O}\left(\text{l}\right)\rightleftharpoons {\text{H}}_{\text{3}}{\text{O}}^{+}\left(\text{aq}\right)+{\text{A}}^{-}\left(\text{aq}\right)$