Question

Balance the equation for each of the following reactions using either the oxidation number or the half-reaction method. Required conditions are indicated in brackets. State which reactant is the oxidizing agent and which is the reducing agent.

a) Au³⁺(aq) + SO₂(aq) --> SO₄^2-(aq) + Au(s) (acidic)

b) Ag(s) + NO₃^-(aq) --> Ag⁺(aq) + NO(g) (acidic)

c) Zn(s) + BrO₄^-(aq) --> Zn(OH)₄^2-(aq) + Br^-(aq) (basic)

d) ClO^-(aq) --> ClO₂^-(aq) + Cl₂(g) (basic)

e) S₂O₃^2-(aq) + OCl^-(aq) --> S₄O₆^2-(aq) + Cl^-(aq) (acidic)