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  • Give reasons: (i) The - hydrogen atoms of aldehydes and ketones are acidic in nature. (ii) Oxidation of aldehydes is easier than ketones. (iii)<img al

Give reasons:
(i) The \alpha- hydrogen atoms of aldehydes and ketones are acidic in nature.
(ii) Oxidation of aldehydes is easier than ketones.
(iii)CH_{2}= CH-COOH is more acidic than CH_{3}CH_{2}-COOH.

 

 

 

 
 
 
 
 

Answers (1)

(a) \alpha -H atom of aldenhyde and keton are acidic in nature due to electron with drawing effect of  - CO- group and reasonance stabilisation of resulting carbanion.
(b) oxidation of aldenyde is easier than ketone due to presence of H-atoms linked to carbonyl group carbon which is absent in ketones.
(c) CH_{2}= CH-COOH is more acidic than CH_{3}CH_{2}COOH as C adjacent to -COOH gp is s p^{2} hybridised whereas in CH_{3}CH_{2}COOH, C adjacent to - COOH group is s p^{3} hybridised and s p^{2} C atom has higher s-character resulting in more acidity.

Posted by

Sumit Saini

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