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  4. For the above three esters, the order of rates of alkaline hydrolysis is <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/chemistry/4d3842ce432f3d273db29ae2f8857dee-.png /> <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/chemistry/f961b8101e4a7d292184666e892b9418-.png />

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Q. For the above three esters, the order of rates of alkaline hydrolysis is
image
image

WBJEEWBJEE 2020

Solution:

Alkaline hydrolysis is a nucleophilic substitution reaction on ester.
Hence, presence of electron withdrawing group promotes nucleophilic attack
$-N O_{2} \,\,\,\,-R $ and $-I $
$-O M e \,\,\,\, +R,-I$
$-M e \,\,\,\,\,\,+I$ and Hyperconjugation