Chapter 17, Problem 76QRT

Interpretation Introduction

Interpretation:

The current required to electroplate a metal surface with $\text{0}\text{.400 g}$ chromium from a solution of ${\text{Cr}}^{\text{3+}}$ in $\text{1}\text{.00 h}$ has to be calculated.

Concept Introduction:

During a redox reaction, the amount of electrons transferred is determined by measuring the current flowing in an external electric circuit for a particular period of time.  The electric charge flowing through an electric circuit is calculated by multiplying the current and the time interval.