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Chemistry
The correct order of reactivity of aldehydes and ketones towards hydrogen cyanide is
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Q. The correct order of reactivity of aldehydes and ketones towards hydrogen cyanide is
MHT CET
MHT CET 2015
A
$CH_{3}COCH_{3} > CH_{3}CHO > HCHO$
B
$CH_{3} COCH_{3} > HCHO >CH_{3} CHO$
C
$CH _{3}CHO > CH_{3} COCH_{3} >HCHO$
D
$HCHO > CH_{3} CHO > CH _{3}COCH_{3}$
Solution:
Hydrogen cyanide (HCN) undergoes nucleophilic addition reaction towards aldehydes and ketones. Aldehydes and ketones containing more electrophilic carbonyl carbon are more reactive towards nucleophilic addition reaction.
Among the given compounds, reactivity order is
$HCHO > CH _{3} CHO > CH _{3} COCH _{3}$