Question

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

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

Hint:

The higher the reduction potential, the stronger the oxidizing agent, as it more readily gains electrons.

Answer 1

The Correct Option is C

The oxidizing power of an ion is directly related to the magnitude of its reduction potential. The larger the reduction potential, the stronger the oxidizing agent. 
- \( \text{Pb}^{4+} \) has the highest reduction potential of \( +1.67 \, \text{V} \), indicating it has the strongest oxidizing capacity. 
Thus, the strongest oxidizing capacity is exhibited by \( \text{Pb}^{4+} \).