Chemistry · 2025
JEE Main · 24 January 2025, Shift 1 · Q56
For the given cell Fe^2+_( aq ) + Ag_( aq )^+ → Fe_( aq )^3++ Ag_( s ) The standard cell potential of the above reaction is Given: Ag^++ e^- → Ag;…
For the given cell
$$\mathrm{Fe}^{2+}{ }_{(\mathrm{aq})}+\mathrm{Ag}_{(\mathrm{aq})}^{+} \rightarrow \mathrm{Fe}_{(\mathrm{aq})}^{3+}+\mathrm{Ag}_{(\mathrm{s})}
$$
The standard cell potential of the above reaction is Given:
$$\begin{aligned}
& \mathrm{Ag}^{+}+\mathrm{e}^{-} \rightarrow \mathrm{Ag} \\
& \mathrm{Fe}^{2+}+2 \mathrm{e}^{-} \rightarrow \mathrm{Fe} \\
& \mathrm{Fe}^{3+}+3 \mathrm{e}^{-} \rightarrow \mathrm{Fe}
\end{aligned}
$$
$$\begin{gathered}
E^\theta=x V \\
E^\theta=y V \\
E^\theta=z V
\end{gathered}
$$
Official answer
From NTA’s final answer key for this paper.
(3)
$\displaystyle x+2 y-3 z$
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JEE Main 2025 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.