Question

In the reaction Zn + H+ Right arrow. Zn2+ + H2, Zn is oxidized and H is reduced.

How many electrons would be produced and used in the balanced half-reactions?



Complete the balanced half-reactions:

H+ +
e– Right arrow.
H2
Zn Right arrow.
Zn2+ +
e–

Answer 1

Two electrons are produced and two electrons are used.

Balanced half-reactions:
- Reduction: 2 H+ + 2 e– → H2
- Oxidation: Zn → Zn2+ + 2 e–

(Overall: Zn + 2 H+ → Zn2+ + H2)