Cu2+(aq) + 2 e- → Cu(s) E° = 0.34 V Cr3+(aq) + e- → Cr2+(aq) E° = -0.41 V According to the half-reac — Electrochemistry Chemistry Question
Question
Cu2+(aq) + 2 e- → Cu(s) E° = 0.34 V
Cr3+(aq) + e- → Cr2+(aq) E° = -0.41 V
According to the half-reactions represented above, which of the following occurs in aqueous solutions under standard conditions?
A.
Cu2+(aq) + Cr3+(aq) → Cu(s) + Cr2+(aq)
B.✓ Correct
Cu2+(aq) + 2 Cr2+(aq) → Cu(s) + 2 Cr3+(aq)
C.
Cu(s) + 2 Cr3+(aq) → Cu2+(aq) + 2 Cr2+(aq)
D.
Cu(s) + Cr3+(aq) → Cu2+(aq) + Cr2+(aq)
E.
2 Cu2+(aq) + Cr3+(aq) → 2 Cu(s) + Cr2+(aq)
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