Chapter 17, Problem 27AE

(a)

Interpretation Introduction

Interpretation:

Each half reaction has to be completed by addition of electrons.

Concept Introduction:

A reduction half reaction is accompanied by addition of electrons while oxidation half reaction is accompanied by loss of electrons. A general reduction process that occurs in reduction half-cell is represented as follows:

  ${\text{M}}^{n+}+{\text{e}}^{-}\to \text{Mn}$

A general oxidation process that occurs in oxidation half-cell is represented as follows:

  $\text{M}\to {\text{M}}^{n+}+{\text{e}}^{-}$

Here

$n$ represents number of  electrons gained or lost.

(b)

Interpretation Introduction

Interpretation:

Oxidation and reduction reaction has to be identified.

Concept Introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

Reaction that occurs at occurs at the anode has to be identified.

Concept Introduction:

Refer to part (a).