   # Electrolysis of a solution of CuSO 4 (aq) to give copper metal is carried out using a current of 0.66 A. How long should electrolysis continue to produce 0.50 g of copper? ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640

#### Solutions

Chapter
Section ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640
Chapter 19, Problem 49PS
Textbook Problem
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## Electrolysis of a solution of CuSO4(aq) to give copper metal is carried out using a current of 0.66 A. How long should electrolysis continue to produce 0.50 g of copper?

Interpretation Introduction

Interpretation:

To determine the time required when electrolysis of a solution of CuSO4(aq) to give copper metal is carried out using a current of 0.66 A.

Concept introduction:

Electrolysis:

It is a decomposition of ionic compounds by passing electricity through molten compounds or aqueous solutions of compounds.

Electricity used to produce chemical changes. The apparatus used for electrolysis is called an electrolytic cell.

Current:

Rate of the charge changing in time.

The formula is as follows.

Current (Amperes, A) = Electric charge (Coloumbs, C)time, t(seconds,s)

Simplify as follows.

Current = Electric charge time

To rearrange the above formula is as follows.

Charge = Current(A) × time(s)

### Explanation of Solution

The half cell reaction of the copper is as follows.

Cu2+(aq) + 2e-  Cu(s)

The mass of Copper =0.50 g.

Let’s calculate the moles electrons:

1mol e = (0.50 g Cu)(1 mol Cu63.5 g Cu)(2 mol e-1 mol Cu)= 1.57×10-2 mol e-

Let’s calculate the charge in the cell:

Charge (C) = (1

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