Question

Question: Classify each reaction as oxidation, reduction, or neither

a.

b.

c.

d.

Short answer

Answer

1. Reduction
2. Oxidation
3. Oxidation
4. Neither

Step-by-step solution

Oxidation and Reduction

The addition of oxygen or removal of hydrogen is an oxidation reaction.

The addition of hydrogen or removal of oxygen is a reduction reaction.

In an organic molecule, the addition of a C-O bond or removal of a C-H bond shows oxidation, and the addition of a C-H bond or removal of a C-O bond shows a reduction.

Identification of oxidation and reduction reaction

a.

Reduction reaction

The product molecule has one C-O bond less and one C-H bond more than the reactant molecule.

Therefore, the reaction is reduction.

b.

Oxidation reaction

The product molecule has one C-O bond more than the reactant molecule.

Therefore, the reaction is oxidation.

c.

Oxidation reaction

The product molecule has one C-O bond more and one C-H bond less than the reactant molecule.

Therefore, the reaction is oxidation.

d.

Addition reaction

In the product molecule, one C-H and one C-Cl bond are added. Therefore, the reaction is neither oxidation nor reduction.