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Give reasons for the following: Sodiu...

Give reasons for the following:
Sodium bisulfite is used for the purification of aldehydes and ketones.

Text Solution

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Aldehydes and ketones (except bezophenone) react with a saturated solution of `NaHSO_(3)` to form white crystalline precipitates which are filtered. These are easily decomposed by aqueous `HCl` or NaOH to regenerates these compounds in pure from.
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