Question

Which element is a strong reducing agent in +2 oxidation state and why? 

Hint:

A strong reducing agent has a more negative electrode potential, as it easily loses electrons and undergoes oxidation.

Answer 1

Zinc's Potent Reducing Capability in its +2 Oxidation State

Zinc (Zn) is identified as a potent reducing agent when in its +2 oxidation state.

This characteristic is attributed to zinc's low standard electrode potential:

\( E^\circ_{\text{Zn}^{2+}/\text{Zn}} = -0.76 \, \text{V} \)

A negative \( E^\circ \) value signifies that metallic zinc readily donates electrons to form \( \text{Zn}^{2+} \) ions:

\( \text{Zn} \rightarrow \text{Zn}^{2+} + 2e^- \)

A more negative \( E^\circ \) value directly correlates with enhanced reducing power, indicating a greater propensity for electron donation.

Consequently, in its +2 oxidation state, zinc functions as a strong reducing agent, capable of reducing other substances by transferring electrons.