Chapter 19, Problem 19.91AP

(a)

Interpretation Introduction

Interpretation: The construction of Magnesium battery is given. Various questions based on this battery have to be answered.

Concept introduction: When two or more cells are combined together then it is known as a battery and there occurs flow of electrons in the circuit when chemical reaction occurs in a battery.

To determine: The value of $E°$ for reduction.

(b)

Interpretation Introduction

To determine: The oxidation state of $\text{Mo}$ in ${\text{Mo}}_3{\text{S}}_4$ and ${\text{MgMo}}_3{\text{S}}_4$.

(c)

Interpretation Introduction

To determine: The need for including ${\text{Mg}}^{2+}$ ions in the electrolyte present in the battery.