Chapter 19, Problem 19.147SP

Interpretation Introduction

(a)

Interpretation:

The amount of zinc that formed should be calculated when $3.35\times {10}^{-2}\text{g}$ of ${\text{Ni(OH)}}_{\text{2}}$ are consumed by the nickel-zinc battery.

Concept introduction:

The amount of substance produced at an electrode by electrolysis depends on the quantity of charge passed through the cell. The number of moles of electrons that go through the cell is responsible for the amount of mass or else moles that producing at the cathode or anode.

$\text{Charge(C)= Current(A)×Time(s)}$

Interpretation Introduction

(b)

Interpretation:

Time should be calculated in minutes that required to fully recharge a dead battery that contains $6.17\times {10}^{-2}\text{g}$ of $\text{Zn}$ with a constant current of $0.10\text{0A}$.

Concept introduction:

The amount of substance produced at an electrode by electrolysis depends on the quantity of charge passed through the cell.

$\text{Charge(C)= Current(A)×Time(s)}$