Chapter 18, Problem 18.52QE

(a)

Interpretation Introduction

Interpretation:

The better oxidant has to be determined from $C{r}_2{O}_7^{2-}orC{e}_{}^{+4}$.

Concept Introduction:

Electrochemical series:

It is a decreasing order of the reduction potentials. The most positive ${\text{E}}^{\text{0}}$ are placed in the top in the electrochemical series; it has greater tendency for reduction and lower tendency of oxidation. And the most negative ${\text{E}}^{\text{0}}$ values of elements are placed in the bottom of the series.

b)

Interpretation Introduction

Interpretation:

The better reducing agent has to be determined from $S{n}^{+2}orF{e}^{+2}$.

Concept Introduction:

Refer to (a)