Answer to Question #160749 in General Chemistry for Melissa

Question

2.   Balance the following reaction in a basic solution:

               I^- + MnO₄^2-     →    MnO₂ + I₂

Answer 1

2 KMnO₄ (aq) + 6 KI (aq) + 4 H₂O (l) → 2 MnO₂ (s) + 3 I₂ (s) + 8 KOH (aq)

Reduction: 2 Mn⁺⁷ + 6 e^- → 2 Mn⁺⁴

Oxidation: 6^-1 - 6 e^- → 6⁰