Answer to Question #185851 in General Chemistry for Aich80

Question

A cell using Zn/Zn⁺²(aq, 1M) and H₂/ H⁺¹(aq, 1M) generates a cell potential of +0.67 V under standard conditions.

A. Write the half-cell reaction at the anode.

B. Write the half-cell reaction at the cathode.

C. Write the electrochemical cell notation.

D. Calculate the standard reduction potential at the anode.

Answer 1

Zn(s) + 2 H⁺(aq)  Zn²⁺(aq) + H₂(g)

• It can be formally divided into separate oxidation and reduction half-reactions.

Oxidation:Zn  Zn²⁺ + 2 e^-Reduction:2 H⁺ + 2 e^-  H₂