Question Detail
Question
Calculate the standard electromotive force (EMF) for a cell constructed from a nickel electrode (Ni²⁺/Ni, E° = -0.25 V) and a copper electrode (Cu²⁺/Cu, E° = +0.34 V) at standard conditions.
Correct Answer
Option C is the correct answer.
Detailed Explanation
Nickel has a more negative reduction potential, so it will be oxidized (anode). Copper will be reduced (cathode). E°cell = E°(cathode) - E°(anode) = 0.34 V - (-0.25 V) = 0.59 V.
Hint
Identify which metal is more easily oxidized (more negative reduction potential).