Standard electrodes potential are: array l Fe ^ 2+ / Fe [ E ^ a =-0.44 ~V ] Fe ^ 3+ / Fe…
Chemistry · JEE Main · NTA Exams — Redox Reactions and Electrochemistry
Standard electrodes potential are:
\(\begin{array}{l} \mathrm{Fe}^{2+} / \mathrm{Fe}\left[\mathrm{E}^{\mathrm{a}}=-0.44 \mathrm{~V}\right] \\ \mathrm{Fe}^{3+} / \mathrm{Fe}^{2+}\left[\mathrm{E}^{\mathrm{a}}=0.77 \mathrm{~V}\right] \end{array}\)
If \(\mathrm{Fe}^{2+}, \mathrm{Fe}^{3+}\) and Fe blocks are kept together, then:
- Fe3+ increases
- Fe3+ decreases
- Fe2+/Fe3+ remains unchanged
- Fe2+ decreases
Answer
(D) Fe 2 + decreases
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