Chapter 16, Problem 104E

Interpretation Introduction

Interpretation:

The number of moles of electrons that is required to electroplate $1.40\text{ g Au}$ is to be determined.

Concept introduction:

The mass of $\text{1 mol}$ of atoms of an element is known as its molar mass.

$1\text{mol}\text{of}\text{atom}=\text{molar}\text{mass}$

With the help of half-cell reaction, the number of moles of electrons required by per mole of metal can be determined.