Question

Statement 1 : Lower acids on reacting with strong electropositive metals give effervescence of `H_2`.
`CH_3 COOC_4 H_9` hydrolyses rapidly than `CH_3 COOCH_3`.
A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. If both assertion and reason are true but reason is not the correct explanation of the assertion
C. If assertion is true but reason is false.
D. If the assertioin and reason both are false.

Answer 1

Correct Answer - C
Larger is the size of alkyl group of ester, greater is the steric effect and thus lesser will be rate of hydrolysis.
`CH_(3)-underset(OCH_(3))underset(|)overset(O)overset(||)(C)+OH^(-) underset(fast)toCH_(3)- underset(OCH_(3))overset(|)overset(overset(ө)(O))overset(|)(C)-OH overset(H^(+))toCH_(3)COOH+CH_(3)OH`
`CH_(3)-underset(OC_(4)H_(9))underset(|) overset(O)overset(||)(C)+ Ooverline(H)overset("slow")to CH_(3)COOH+C_(4)H_(9)OH`