Order of hydrolysis for the following(I) RCOCI(II) RCOOR(III) RCONH2(IV) (RCO)2O

Of all the acid derivatives, acid chlorides, i.e. CH3COCI is most reactive.The order of reactivity of acid derivatives decreases in the following order,RCOCl>(RCO)2O>RCOOR>RCONH2