Chemistry · 2026
JEE Main · 23 January 2026, Shift 1 · Q57
In the given electrochemical cell, Ag ( s )| AgCl ( s )| FeCl_2( aq ), FeCl_3( aq ) ∣ Pt ( s ) at 298 K, the cell potential ( E_cell ) will increase…
In the given electrochemical cell, $\displaystyle \mathrm{Ag}(\mathrm{s})|\mathrm{AgCl}(\mathrm{s})| \mathrm{FeCl}_2(\mathrm{aq}), \mathrm{FeCl}_3(\mathrm{aq}) \mid \mathrm{Pt}(\mathrm{s})$ at $\displaystyle 298$ K , the cell potential $\displaystyle \left(\mathrm{E}_{\text {cell }}\right)$ will increase when :
A. Concentration of $\displaystyle \mathrm{Fe}^{2+}$ is increased.
B. Concentration of $\displaystyle \mathrm{Fe}^{3+}$ is decreased.
C. Concentration of $\displaystyle \mathrm{Fe}^{2+}$ is decreased.
D. Concentration of $\displaystyle \mathrm{Fe}^{3+}$ is increased.
E. Concentration of $\displaystyle \mathrm{Cl}^{-}$is increased.
Choose the correct answer from the options given below :
Official answer
From NTA’s final answer key for this paper.
(1)
C, D and E Only
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JEE Main 2026 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.