What is the order of acidic strength for the | vedclass

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(D) The acidic strength of phenols depends on the nature of the substituent attached to the benzene ring.$-NO_2$ is an electron-withdrawing group $(EW

Vedclass · Accepted Answer

$IV < III < I < II$

Vedclass · Answer

(D) The acidic strength of phenols depends on the nature of the substituent attached to the benzene ring.$-NO_2$ is an electron-withdrawing group $(EWG)$,which increases acidic strength by stabilizing the phenoxide ion through $-I$ and $-M$ effects.$-CH_3$ is an electron-donating group $(EDG)$,which decreases acidic strength by destabilizing the phenoxide ion through $+I$ and hyperconjugation effects.Comparing the compounds:$IV$ ($p$-nitrophenol) has the strongest $-M$ effect from the $-NO_2$ group at the para position.$III$ ($m$-nitrophenol) has only the $-I$ effect from the $-NO_2$ group.$I$ is phenol itself.$II$ ($p$-cresol) has the $+I$ effect from the $-CH_3$ group.Thus,the correct order of acidic strength is $IV > III > I > II$.

What is the order of acidic strength for the following compounds?

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