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Problem: What is the reducing agent in the following reaction?5 Fe2+(aq) + MnO4-(aq) + 8 H+(aq) → 5 Fe3+(aq) + Mn2+(aq) + 4 H2O(I)A. MnO4-B. Fe3+C. Mn2+D. Fe2+E. H+

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FREE Expert Solution

We’re being asked to identify the oxidizing and reducing agents in the reaction:

5 Fe2+(aq) + MnO4-(aq) + 8 H+(aq) → 5 Fe3+(aq) + Mn2+(aq) + 4 H2O(I)


To do so, we need to identify the change in oxidation state for each element in the reaction. 

Recall the mnemonic for redox reactions:

Loss Electrons  Oxidation  Reducing Agent

Gain Electrons  Reduction  Oxidizing Agent


This means the element that gains electrons/reduced is the oxidizing agent while the element that loses electrons/oxidized is the reducing agent

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Problem Details

What is the reducing agent in the following reaction?

5 Fe2+(aq) + MnO4-(aq) + 8 H+(aq) → 5 Fe3+(aq) + Mn2+(aq) + 4 H2O(I)

A. MnO4-

B. Fe3+

C. Mn2+

D. Fe2+

E. H+