Chapter 22, Problem 22.42P

(a)

Interpretation Introduction

Interpretation:

The oxidation states of copper in ${\text{Cu}}_{\text{2}}{\text{S, Cu}}_{\text{2}}\text{O, and Cu}$ have to be given.

Concept Introduction:

Oxidation:  It is the process in which an atom loss its electrons or addition of oxidation occurs in it or removal of hydrogen.

Reducing agent: Substances that undergoes oxidation itself and reduces other substance is called reducing agent.

Oxidizing agent: Substances that undergoes reduction itself and oxidizes other substance is called oxidizing agent.

(b)

Interpretation Introduction

Interpretation:

The oxidizing and reducing agents in this reaction has to be identified.

Concept Introduction:

Oxidation:  It is the process in which an atom loss its electrons or addition of oxidation occurs in it or removal of hydrogen.

Reducing agent: Substances that undergoes oxidation itself and reduces other substance is called reducing agent.

Oxidizing agent: Substances that undergoes reduction itself and oxidizes other substance is called oxidizing agent.