Quiz #6

Open Notes, Open Neighbor

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

Write the balanced reaction for a zinc–air battery:

Zn(s) | Zn2+(aq) || O2(g) | H+(aq) | Pt(s)

Answer

Oxidation: Zn(s) → Zn2+(aq) + 2 e–

Reduction: O2(g) + 4 H+(aq) + 4 e– → 2 H2O(l)

Net: 2 Zn(s) + O2(g) + 4 H+(aq) → 2 Zn2+(aq) + 2 H2O(l)