Question

Which of the following half-reactions would occur at the anode of an electrochemical cell?

A. H+(aq) + Cl− (aq) → HCl(aq)
B. Cu(s) → Cu+(aq) + e−
C. Cu+(aq) + e− → Cu(s)
D. Li+(aq) + e− → Li(s)

Answer 1

@aaronq

Answer 2

@Jesstho.-. help!!!

Answer 3

so (from the previous question) what happens at the anode?

Answer 4

oxidation

Answer 5

right, so which one of these equations is an oxidation reaction?

Answer 6

B?

Answer 7

Exactly.
The half-reaction on the anode, where oxidation occurs, is Zn(s) = Zn2+(aq) + 2e-. The zinc loses two electrons to form Zn2+. The half-reaction on the cathode where reduction occurs is Cu2+(aq) + 2e- = Cu(s).

Answer 8

yup!

Answer 9

so the answer is B?

Answer 10

The entire reaction can be written by combining both half-reactions: Zn(s) + Cu2+(aq) = Zn2+(aq) + Cu(s)

Answer 11

Understand?

Answer 12

yep! the answer is B! thank you! :)

Answer 13

No problem