Question

The standard reduction potential values of some of the p-block ions are given below. Predict the one with the strongest oxidising capacity.

• A. \( {E}^\circ \, {I}_3^- / {I}_2 = +1.26 \, {V} \)
• B. \( {E}^\circ \, {Al}^{3+} / {Al} = -1.66 \, {V} \)
• C. \( {E}^\circ \, {Pb}^{4+} / {Pb}^{2+} = +1.67 \, {V} \)
• D. \( {E}^\circ \, {Sn}^{4+} / {Sn}^{2+} = +1.15 \, {V} \)

Hint:

In redox reactions, the species with the highest positive reduction potential is the strongest oxidising agent.

Answer 1

The Correct Option is C

An oxidizing agent's strength corresponds directly to its reduction potential; a higher reduction potential signifies a stronger oxidizing agent.Of the given choices, \( {Pb}^{4+} / {Pb}^{2+} \) exhibits the highest reduction potential at \( +1.67 \, {V} \).Consequently, \( {Pb}^{4+} \) is identified as the most potent oxidizing agent.