Arrange the following labelled hydrogens in d | vedclass

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(A) The acidity of the protons depends on the stability of the conjugate base formed after the removal of the proton.$1$. Proton $b$ is part of a carb

Vedclass · Accepted Answer

$b > c > d > a$

Vedclass · Answer

(A) The acidity of the protons depends on the stability of the conjugate base formed after the removal of the proton.$1$. Proton $b$ is part of a carboxylic acid group $(-COOH)$. The conjugate base (carboxylate ion,$-COO^	heta$) is stabilized by equivalent resonance.$2$. Protons $c$ and $d$ are phenolic protons ($-OH$ attached to an aromatic ring). The conjugate base is a phenoxide ion,which is stabilized by resonance,but less so than the carboxylate ion.$3$. Proton $a$ is an acetylenic proton $(-C \equiv CH)$. The conjugate base is an acetylide ion $(-C \equiv C^	heta)$,which is the least stable among these due to the lack of resonance stabilization.$4$. Comparing $c$ and $d$: Proton $c$ is ortho to an electron-withdrawing $-NO_2$ group (via the aromatic ring system),which increases its acidity compared to $d$ through the inductive effect.Thus,the order of acidity is $b > c > d > a$.

Column-$I$	Column-$II$
$(A)$ $CF_3COOH$	$(i)$ $3.41$
$(B)$ Benzoic acid	$(ii)$ $4.76$
$(C)$ $CH_3COOH$	$(iii)$ $0.23$
$(D)$ $4$-nitrobenzoic acid	$(iv)$ $4.20$

Column-$I$ (Acid)	Column-$II$ (Formula) and Column-$III$ ($IUPAC$ Name)
$(A)$ Adipic acid	$(ii)$ $HOOC(CH_2)_4COOH$ ; $(y)$ Hexanedioic acid
$(B)$ Carballylic acid	$(iii)$ $HOOC-CH_2-CH(COOH)-CH_2-COOH$ ; $(n)$ Propane-$1,2,3$-tricarboxylic acid
$(C)$ Phthalic acid	$(i)$ $1,2-C_6H_4(COOH)_2$ ; $(x)$ Benzene-$1,2$-dicarboxylic acid
$(D)$ Glutaric acid	$(iv)$ $HOOC(CH_2)_3COOH$ ; $(m)$ Pentanedioic acid

Arrange the following labelled hydrogens in decreasing order of acidity.

Similar Questions

The product $(P)$ of the given reaction is:

Match Column-$I$ with Column-$II$ based on the $pK_a$ values of the given carboxylic acids:
Column-$I$ Column-$II$
$(A)$ $CF_3COOH$ $(i)$ $3.41$
$(B)$ Benzoic acid $(ii)$ $4.76$
$(C)$ $CH_3COOH$ $(iii)$ $0.23$
$(D)$ $4$-nitrobenzoic acid $(iv)$ $4.20$

Which of the following is the correct order of acidic strength?

In the given reaction $[X]$ will be :

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