Chemistry · 2022
JEE Main · 28 June 2022, Shift 2 · Q84
For the given reactions Sn^2++2 e^- → Sn; Sn^4++4 e^- → Sn the electrode potentials are; E_Sn^2+ / Sn^o =-0.140 V and E_Sn^4+ / Sn^o =0.010 V. The…
For the given reactions
$$\begin{aligned}
& \mathrm{Sn}^{2+}+2 \mathrm{e}^{-} \rightarrow \mathrm{Sn} \\
& \mathrm{Sn}^{4+}+4 \mathrm{e}^{-} \rightarrow \mathrm{Sn}
\end{aligned}
$$
the electrode potentials are $\displaystyle ; \mathrm{E}_{\mathrm{Sn}^{2+} / \mathrm{Sn}}^{\mathrm{o}}=-0.140 \mathrm{~V}$ and $\displaystyle \mathrm{E}_{\mathrm{Sn}^{4+} / \mathrm{Sn}}^{\mathrm{o}}=0.010 \mathrm{~V}$. The magnitude of standard electrode potential for $\displaystyle \mathrm{Sn}^{4+} / \mathrm{Sn}^{2+}$ i.e. $\displaystyle \mathrm{E}_{\mathrm{Sn}^{4+} / \mathrm{Sn}^{2+}}^{\mathrm{o}}$ is \_\_\_\_ $\displaystyle \times 10^{-2} \mathrm{~V}$.
(Nearest integer)
Official answer
16
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JEE Main 2022 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.