Chapter 18, Problem 39A

Interpretation Introduction

Interpretation: The given sentence needs to be completed. Also, the difference of this process and a galvanic cell needs to be explained.

Concept Introduction: Electrolysis is the breakdown of compound’s chemical bonds to create elemental substances. The method involves passing of electrical current through the electrolyte to be degraded at different voltage between two electrodes. The electrolytes consist of cations and anions.

Answer to Problem 39A

The process of electrolysis involves forcing a current through a cell to produce a chemical change that would not otherwise occur.

Explanation of Solution

For a chemical change, electric energy is used in electrolysis process. In electrolysis for a chemical change to take place, an electric current is supplied via a cell. In galvanic cell, an oxidation−reduction reaction occurs to produced electric current by separating the oxidizing agent from the reducing agent.

Conclusion

Electrolysis is used in the production of metals from their ores.