The standard reduction potentials at 298 K are given against each of the following half cell reactions : I. E _ H ^ H _ 2 ^ =0.00 ~V II. E _ Fe ^ 3+ Fe ^ +2 ^ =+0.77 ~V III. Zn Zn ^ 2+ SOP E ^ 0 =0.76 ~V IV. E ^ Based on the above data, state which of the following is the strongest reducing agent ?

The standard reduction potentials at 298 K are given against each of the following half…

Chemistry · JEE Main · NTA Exams — Redox Reactions and Electrochemistry

The standard reduction potentials at 298 K are given against each of the following half cell reactions :
I. \(\mathrm{E}_{\mathrm{H}^{\oplus} \mid \mathrm{H}_{2}}^{\ominus}=0.00 \mathrm{~V}\) II. \(\mathrm{E}_{\mathrm{Fe}^{3+} \mid \mathrm{Fe}^{+2}}^{\oplus}=+0.77 \mathrm{~V}\)
III. \(\mathrm{Zn} \rightarrow \mathrm{Zn}^{2+} \underset{\substack{\uparrow \\ \text { SOP }}}{\mathrm{E}^{0}}=0.76 \mathrm{~V}\) IV. \(\mathrm{E}^{\circ}\)
Based on the above data, state which of the following is the strongest reducing agent ?

Zn
Cr
H₂
Fe

Answer

(A) Zn

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