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JEE Advanced levelOne or more correct optionsDifficulty 3 of 3ph051

Chlorine gas is passed into (i) cold dilute and (ii) hot concentrated aqueous $NaOH$ . Select the correct statement(s).

AIn (ii) the mole ratio $NaCl : NaClO X_{3}$ formed is 5 : 1.
BIn (ii) the chlorine-containing products are $NaCl$ and $NaClO X_{3}$ .
CIn (i) chlorine acts only as an oxidising agent.
DIn (i) the chlorine-containing products are $NaCl$ and $NaOCl$ .

Answer: A, B, D

(i)

Cl X_{2} + 2 NaOH NaCl + NaOCl + H X_{2} O

and (ii)

3 Cl X_{2} + 6 NaOH 5 NaCl + NaClO X_{3} + 3 H X_{2} O

, so A, B and C are right. D is wrong because in both reactions chlorine disproportionates, acting as both oxidant and reductant.

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