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JEE Mains · Chemistry · STD 12 -1. Solution and colligative properties

0.1 M solution of KI reacts with excess of \(\mathrm{H}_2 \mathrm{SO}_4\) and \(\mathrm{KIO}_3\) solutions. According to equation
\(5 \mathrm{I}^{-}+\mathrm{IO}_3^{-}+6 \mathrm{H}^{+} \rightarrow 3 \mathrm{I}_2+3 \mathrm{H}_2 \mathrm{O}\)

Identify the correct statements :
(A) 200 mL of KI solution reacts with 0.004 mol of \(\mathrm{KIO}_3\)
(B) 200 mL of KI solution reacts with 0.006 mol of \(\mathrm{H}_2 \mathrm{SO}_4\)
(C) 0.5 L of KI solution produced 0.005 mol of \(\mathrm{I}_2\)
(D) Equivalent weight of \(\mathrm{KIO}_3\) is equal to ( \(\frac{\text { Molecular weight }}{5}\) )

Choose the correct answer from the options given below :

  1. A (A) and (D) only
  2. B (C) and (D) only
  3. C (B) and (C) only
  4. D (A) and (B) only
Verified Solution

Answer & Solution

Correct Answer

(A) (A) and (D) only

Step-by-step Solution

Detailed explanation

\(\begin{aligned} & \mathrm{E}_{\mathrm{KIO}_3}=\frac{\text { Molecular welght }}{\mathrm{n}_{\mathrm{f}}} \\ & \mathrm{n}_{\mathrm{f}}=5 \\ & \mathrm{E}_{\mathrm{KIO}_3}=\frac{\text { Molecular welght }}{5}\end{aligned}\) (D) is correct meq of \(\mathrm{KI}=0.1 \times 200=20\)…
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