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JEE CHEMISTRY MCQ: SOME BASIC CONCEPTS OF CHEMISTRY

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Analyzing +4 | -1
0.1 M solution of KI reacts with excess of H2SO4\mathrm{H}_2 \mathrm{SO}_4 and KIO3\mathrm{KIO}_3 solution. According to equation

5I−+IO3−+6H+→3I2+3H2O5 \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 KIO3\mathrm{KIO}_3

(B) 200 mL of KI solution reacts with 0.006 mol of H2SO4\mathrm{H}_2 \mathrm{SO}_4

(3) 0.5 L of KI solution produced 0.005 mol of I2\mathrm{I}_2

(4) Equivalent weight of KIO3\mathrm{KIO}_3 is equal to (Molecular weight5)\left(\frac{\text {Molecular weight}}{5}\right)

Choose the correct answer from the options given below:
View answer and explanation
Correct option: A
(A) and (D) only
The correct answer is A ((A) and (D) only) because the stoichiometry of the reaction confirms that 200 mL of 0.1 M KI reacts with 0.004 mol of KIO3, and the equivalent weight of KIO3 is Molecular weight/5.

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