Match the following:Column-1 (Acid)Column-2 ( | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

$(A)$ The acidity of a carboxylic acid is directly proportional to the acid dissociation constant $(K_a)$ and inversely proportional to the $pK_a$ val

Vedclass · Accepted Answer

$A-IV, B-I, C-III, D-II$

Vedclass · Answer

$(A)$ The acidity of a carboxylic acid is directly proportional to the acid dissociation constant $(K_a)$ and inversely proportional to the $pK_a$ value, where $pK_a = -\log K_a$.$1$. $CH_3COOH$ (Acetic acid): Least acidic among the given options, so it has the highest $pK_a$ value of $4.76$. $(A-IV)$$2$. $	ext{Benzoic acid}$: More acidic than acetic acid, so it has a $pK_a$ value of $4.19$. $(C-III)$$3$. $p	ext{-Nitrobenzoic acid}$: The $-NO_2$ group is electron-withdrawing ($-I$ and $-M$ effect), increasing acidity, so it has a $pK_a$ value of $3.41$. $(D-II)$$4$. $F_3CCOOH$ (Trifluoroacetic acid): The three fluorine atoms exert a strong electron-withdrawing inductive effect, making it the most acidic, with a $pK_a$ value of $0.23$. $(B-I)$Therefore, the correct match is $A-IV, B-I, C-III, D-II$.

Column-$1$ (Acid)	Column-$2$ ($pK_a$ value)
$A. CH_3COOH$	$I. 0.23$
$B. F_3CCOOH$	$II. 3.41$
$C. \text{Benzoic acid}$	$III. 4.19$
$D. p\text{-Nitrobenzoic acid}$	$IV. 4.76$

Match the following:
Column-$1$ (Acid) Column-$2$ ($pK_a$ value)
$A. CH_3COOH$ $I. 0.23$
$B. F_3CCOOH$ $II. 3.41$
$C. \text{Benzoic acid}$ $III. 4.19$
$D. p\text{-Nitrobenzoic acid}$ $IV. 4.76$

The correct match is:

Similar Questions

The reaction of $RCOOH$ with $R'OH$ takes place in the presence of $H_2SO_4$ to form an ester. The intermediate in the reaction is:

Identify the product $(P)$ in the following reaction:

All of the following compounds react with ethylmagnesium bromide $(CH_3CH_2MgBr)$. Alcohols are formed from three of the compounds. Which one does not give an alcohol?

Arrange the following compounds in order of their increasing acid strength:
$I: HO_2C(CH_2)_4CO_2H$
$II: CH_3CH(COOH)_2$
$III: HOOC-COOH$
$IV: HO_2C(CH_2)_3CO_2H$

$A$ colourless water-soluble organic liquid decomposes sodium carbonate and liberates carbon dioxide. It produces a black precipitate with Tollen's reagent. The liquid is

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Match the following:Column-$1$ (Acid)Column-$2$ ($pK_a$ value)$A. CH_3COOH$$I. 0.23$$B. F_3CCOOH$$II. 3.41$$C. \text{Benzoic acid}$$III. 4.19$$D. p\text{-Nitrobenzoic acid}$$IV. 4.76$The correct match is: