Chapter 8.5, Problem 8.21Q

Interpretation Introduction

Interpretation:

The oxidation half-reaction, reduction half-reaction and complete reaction of formation of calcium sulphide has to be written.

Concept Introduction:

Oxidation is defined as a loss of electrons, loss of hydrogen atoms, or gain of oxygen

atoms.

Reduction is defined as a gain of electrons, gain of hydrogen atoms, or loss of oxygen atoms.

Half-reactions, one oxidation and one reduction, are exactly that: one-half of a complete

reaction. The two half-reactions combine to produce the complete reaction.