The correct order of acid strength of the fol | vedclass

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

Vedclass · Accepted Answer

$D > C > A > B$

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(B) The acidity of phenols is determined by the stability of the phenoxide ion formed after the loss of a proton.Electron-withdrawing groups $(EWG)$ increase acidity,while electron-donating groups $(EDG)$ decrease acidity.$1$. $p$-Nitrophenol $(D)$ has a $-NO_2$ group at the para position,which exerts both $-I$ and $-M$ effects,strongly stabilizing the phenoxide ion.$2$. $m$-Nitrophenol $(C)$ has a $-NO_2$ group at the meta position,which exerts only the $-I$ effect,providing moderate stabilization.$3$. Phenol $(A)$ has no substituent.$4$. $p$-Cresol $(B)$ has a $-CH_3$ group at the para position,which exerts $+I$ and hyperconjugation $(HC)$ effects,destabilizing the phenoxide ion.Therefore,the correct order of acid strength is $D > C > A > B$.

The correct order of acid strength of the following compounds is:
$A$. Phenol
$B$. $p$-Cresol
$C$. $m$-Nitrophenol
$D$. $p$-Nitrophenol

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The correct order of acid strength of the following compounds is:$A$. Phenol$B$. $p$-Cresol$C$. $m$-Nitrophenol$D$. $p$-Nitrophenol