alleryWhat is the cathode reaction when acidified water releases hydrogen?
ACu2+ + 2e− → Cu
B2H2O → O2 + 4H+ + 4e−
C2H+ + 2e− → H2
D2Br− → Br2 + 2e−
Answer & Solution
Correct answer: C. 2H+ + 2e− → H2
Hydrogen ions gain electrons at the cathode to form hydrogen gas.
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