Quiz #5

Open Notes, Open Neighbor

On a piece of paper put your Name, Student ID Number and Answer to:

Complete and balance the following reaction:

Co3+(aq) + H2(g) → Co(s) + H+(aq)

Answer

Co3+(aq) + H2(g) → Co(s)

Oxidation: H2(g) → 2 H+(aq) + 2 e–

Reduction: Co3+(aq) + 3 e– → Co(s)

Net: 2 Co3+(aq) + 3 H2(g) → 2 Co(s) + 6 H+(aq)