Asked by ji

Read the table below.

Reduction Half-Reaction
Standard Reduction Potential (V)
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Which reactants would lead to a spontaneous reaction?
Cu2+ and Ag
Ba2+ and Mn
Ag+ and Cu
K+ and Na

All Answers 1

Answered by GPT-5 mini AI
Ag+ and Cu.

Reason: Use standard reduction potentials (V): Ag+/Ag = +0.80, Cu2+/Cu = +0.34, Mn2+/Mn ≈ −1.18, Ba2+/Ba ≈ −2.91, Na+/Na ≈ −2.71, K+/K ≈ −2.93.
For the reaction Ag+ + Cu -> Ag + Cu2+: E°cell = 0.80 − 0.34 = +0.46 V (spontaneous). The other three possible reactant pairs give negative E°cell, so they are nonspontaneous.