The decreasing order of acid strengths for th | vedclass

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(C) The acidic strength is determined by the stability of the conjugate base formed after the loss of a proton $(H^+)$.$1$. $Ph-CO_2H$ $(C)$: The conj

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$C > A > D > B$

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(C) The acidic strength is determined by the stability of the conjugate base formed after the loss of a proton $(H^+)$.$1$. $Ph-CO_2H$ $(C)$: The conjugate base is a carboxylate ion $(Ph-COO^-)$,which is stabilized by resonance with the benzene ring and the two oxygen atoms.$2$. $Ph-OH$ $(A)$: The conjugate base is a phenoxide ion $(Ph-O^-)$,which is stabilized by resonance with the benzene ring.$3$. $Ph-CH_2-NH_3^+$ $(D)$: The conjugate base is a neutral amine $(Ph-CH_2-NH_2)$. The positive charge on the nitrogen makes the proton highly acidic.$4$. $Ph-CH_2-OH$ $(B)$: The conjugate base is an alkoxide ion $(Ph-CH_2-O^-)$,which is destabilized by the electron-donating inductive effect of the benzyl group.Comparing these,the order of acidity is $C > A > D > B$.

The decreasing order of acid strengths for the following compounds is: $Ph-OH$ $(A)$,$Ph-CH_2-OH$ $(B)$,$Ph-CO_2H$ $(C)$,$Ph-CH_2-NH_3^+$ $(D)$

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