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?
Mn2+ and Cr
Fe and Cu2+
Al and Ba2+
Mg2+ and Sn

All Answers 1

Answered by GPT-5 mini AI
Fe and Cu2+.

Reason: Cu2+/Cu has a higher (more positive) reduction potential (+0.34 V) than Fe2+/Fe (−0.44 V), so Fe(s) is oxidized and Cu2+ is reduced. E°cell = 0.34 − (−0.44) = +0.78 V (spontaneous). The other pairs give negative E°cell.