Chapter 20, Problem 88CWP

(a)

Interpretation Introduction

Interpretation: The time taken for the electrolysis of ${\text{CaCl}}_{\text{2}}$ and the mass of calcium metal produced is given. The amount of current produced and the mass of chlorine produced is to be calculated.

Concept introduction: The number of atoms is calculated as,

$\text{Number}\text{of}\text{atoms}=\frac{\text{Mass}\times 6.022\times {10}^{23}}{\text{Atomic}\text{mass}}$

The current flowing through the cell is calculated by the formula,

$\text{Current}=\frac{\text{Charge}}{\text{Time}}$

To determine: The current produced by the electrolysis of ${\text{CaCl}}_{\text{2}}$.

(b)

Interpretation Introduction

Interpretation: The time taken for the electrolysis of ${\text{CaCl}}_{\text{2}}$ and the mass of calcium metal produced is given. The amount of current produced and the mass of chlorine produced is to be calculated.

Concept introduction: The number of atoms is calculated as,

$\text{Number}\text{of}\text{atoms}=\frac{\text{Mass}\times 6.022\times {10}^{23}}{\text{Atomic}\text{mass}}$

The current flowing through the cell is calculated by the formula,

$\text{Current}=\frac{\text{Charge}}{\text{Time}}$

To determine: The mass of chlorine gas produced in the electrolysis of ${\text{CaCl}}_{\text{2}}$.