The correct sequence of the decreasing order of reactivity during hydrolysis of acid chlorides is:
PhCOCl>p−O2NC6H4COCl>p−CH3OC6H4COCl
PhCOCl>p−CH3OC6H4COCl>p−O2NC6H4COCl
p−O2NC6H4COCl>PhCOCl>p−CH3OC6H4COCl
p−O2NC6H4COCl>p−CH3OC6H4COCl>PhCOCl
Electron withdrawing group increases the rate while electron donating group decreases the rate of reactivity.