Which of the following substances is the most | vedclass

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(C) The acidity of phenols is determined by the stability of the phenoxide ion formed after the loss of a proton. \ Electron-withdrawing groups $(EWG

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$p-$Nitrophenol

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(C) The acidity of phenols is determined by the stability of the phenoxide ion formed after the loss of a proton. \ Electron-withdrawing groups $(EWG)$ stabilize the phenoxide ion through $-I$ and $-M$ effects,thereby increasing acidity. \ The $-NO_2$ group in $p-$nitrophenol is a strong electron-withdrawing group (both $-I$ and $-M$ effects),making it the most acidic among the given options. \ The $-CH_3$ group in $p-$cresol is electron-donating ($+I$ and hyperconjugation),$-NH_2$ in $p-$aminophenol is strongly electron-donating $(+M)$,and $-Cl$ in $p-$chlorophenol is weakly electron-withdrawing ($-I$ effect but $+M$ effect). \ Thus,the order of acidity is $p-$nitrophenol > $p-$chlorophenol > $p-$cresol > $p-$aminophenol.

Which of the following substances is the most acidic?

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