Identifying Spontaneous Reduction in Electrochemistry

Easy General Chemistry Electrochemistry

In an electrochemical cell, two half-reactions occur: an oxidation reaction at the anode and a reduction reaction at the cathode. Given the standard reduction potentials of various half-reactions, which of the following half-reactions represents a species that is spontaneously reduced when coupled with zinc oxidation in a galvanic cell?

Ag+ + e- → Ag (E∘ = +0.80 V)

Cu2+ + 2e- → Cu (E∘ = +0.34 V)

Fe2+ + 2e- → Fe (E∘ = -0.44 V)

H2 + 2e- → 2H+ (E∘ = 0.00 V)

Hint

Submitted2.3K

Correct1.9K

% Correct82%