Chemistry · 2026
JEE Main · 28 January 2026, Shift 1 · Q74
Consider the following redox reaction taking place in acidic medium BH_4^-(a q)+ ClO_3^-(a q) → H_2 BO_3^-(a q)+ Cl^-(a q) If the Nernst equation for…
Consider the following redox reaction taking place in acidic medium
$$\mathrm{BH}_4^{-}(a q)+\mathrm{ClO}_3^{-}(a q) \longrightarrow \mathrm{H}_2 \mathrm{BO}_3^{-}(a q)+\mathrm{Cl}^{-}(a q)
$$
If the Nernst equation for the above balanced reaction is
$$\mathrm{E}_{\text {cell }}=\mathrm{E}_{\text {cell }}^{\circ}-\frac{\mathrm{RT}}{\mathrm{nF}} \ln \mathrm{Q},
$$
then the value of n is $\displaystyle \_\_\_\_$ .(Nearest integer)
Official answer
From NTA’s final answer key for this paper.
24
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JEE Main 2026 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.