Q. Which of the aldehyde is most reactive?
A) $C_{6}H_{5}CHO$
B) $CH_{3}CHO$
C) $HCHO$
D) All are equally reactive
Explanation
(c)
Among the carbonyl compounds, the reactivity decreases with increase in number of alkyl group and size of alkyl group because the positive charge on the carbon atom decreases due to +I effect of alkyl groups.
Thus, the correct order reactivity is
$HCHO > CH_{3}CHO > C_{6}H_{5}CHO$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.