APFIVE Balancing A Reduction Half-Reaction
In the redox reaction between Cu and HNO3, which produces Cu(NO3)2, NO, and H2O, which of the following represents the balanced reduction half-reaction?
A
2NO3- + 8H+ + 6e- → 2NO + 4H2O
B
NO3- + 3H+ + 2e- → NO + H2O
C
NO3- + 2H+ + e- → NO + H2O
D
NO3- + 4H+ + 3e- → NO + 2H2O
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