12th Class Chemistry Aldehydes, Ketones and Carboxylic Acids / ऐल्डिहाइड, कीटोन तथा कर्बोक्सिलिक अम्ल Question Bank 12th CBSE Chemistry Aldehydes, Ketones

  • question_answer
    Sodium bisulphite is used to purify aldehydes and ketones. Explain.

    Answer:

                    Aldehydes and ketones (except benzophenone) react with a saturated solution of \[NaHS{{O}_{3}}\] to form white crystalline precipitates which are filtered. These are easily decomposed by aqueous \[HCl\] or NaOH to regenerate these compounds in pure form.


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