Chemistry · 2025
JEE Main · 29 January 2025, Shift 2 · Q51
1 M solution of KI reacts with excess of H_2 SO_4 and KIO_3 solutions. According to equation 5 I^-+ IO_3^-+6 H^+ → 3 I_2+3 H_2 O Identify the correct…
$\displaystyle 1$ M solution of KI reacts with excess of $\displaystyle \mathrm{H}_2 \mathrm{SO}_4$ and $\displaystyle \mathrm{KIO}_3$ solutions. According to equation $\displaystyle 5 \mathrm{I}^{-}+\mathrm{IO}_3^{-}+6 \mathrm{H}^{+} \rightarrow 3 \mathrm{I}_2+3 \mathrm{H}_2 \mathrm{O}$
Identify the correct statements :
(A)
$\displaystyle 200$ mL of KI solution reacts with $\displaystyle 0.004$ mol of $\displaystyle \mathrm{KIO}_3$
(B)
$\displaystyle 200$ mL of KI solution reacts with $\displaystyle 0.006$ mol of $\displaystyle \mathrm{H}_2 \mathrm{SO}_4$
(C)
0.$\displaystyle 5$ L of KI solution produced $\displaystyle 0.005$ mol of $\displaystyle \mathrm{I}_2$
(D)
Equivalent weight of $\displaystyle \mathrm{KIO}_3$ is equal to $\displaystyle \left(\frac{\text { Molecular weight }}{5}\right)$
Choose the correct answer from the options given below :
Official answer
From NTA’s final answer key for this paper.
(3)
(A) and (D) only
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JEE Main 2025 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.