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JEE Main levelSingle correct optionDifficulty 2 of 3sb183

Chlorine is passed into hot concentrated aqueous $NaOH$ . The chlorine-containing products are

A $NaCl$ and $NaClO X_{4}$
B $NaClO X_{3}$ and $NaOCl$
C $NaCl$ and $NaOCl$
D $NaCl$ and $NaClO X_{3}$

Answer: D

In hot concentrated alkali hypochlorite disproportionates further, so the net reaction is

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

. The cold dilute reaction gives

NaOCl

instead.

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