Sodium bisulphite is used for purification of aldehydes and ketones. Explain
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When saturated solution of sodium hydrogensulphite also called sodium bisulphite is mixed with an impure aldehyde/ ketone, it produces an addition compound with white crystals. ... That is why sodium bisulphite is used for purification of aldehyde and ketones
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Explanation:
Aldehydes and Ketones form addition compounds with NaHSO3 whereas impurities do not. On hydrolysis we get pure aldehydes and Ketones back.
see the picture.
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