How many of the following compounds react wit | vedclass

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

Question

(C) Compounds that are stronger acids than carbonic acid ($H_2CO_3$,$pK_a \approx 6.35$) will react with $NaHCO_3$ to evolve $CO_2$ gas.Let us evaluat

Vedclass · Accepted Answer

$7$

Vedclass · Answer

(C) Compounds that are stronger acids than carbonic acid ($H_2CO_3$,$pK_a \approx 6.35$) will react with $NaHCO_3$ to evolve $CO_2$ gas.Let us evaluate each compound:$I$: $3$-Nitrophenol $(pK_a \approx 8.3)$ - Weaker acid,no reaction.$II$: $2,4$-Dinitrophenol $(pK_a \approx 4.1)$ - Stronger acid,reacts.$III$: $4$-Hydroxybenzoic acid $(pK_a \approx 4.5)$ - Stronger acid,reacts.$IV$: $4$-Methylbenzoic acid $(pK_a \approx 4.4)$ - Stronger acid,reacts.$V$: $4$-Chlorophenol $(pK_a \approx 9.4)$ - Weaker acid,no reaction.$VI$: $2,4$-Dinitrotoluene - Not an acid,no reaction.$VII$: $4$-Hydroxybenzenesulfonic acid - Contains $-SO_3H$ group,stronger acid,reacts.$VIII$: $4$-Sulfobenzoic acid - Contains $-SO_3H$ and $-COOH$ groups,stronger acid,reacts.$IX$: Squaric acid $(pK_a \approx 1.5)$ - Stronger acid,reacts.$X$: Maleic acid $(pK_a \approx 1.9)$ - Stronger acid,reacts.The compounds that react are $II, III, IV, VII, VIII, IX, X$. Total count is $7$.

Similar Questions

The $pK_a$ values of four carboxylic acids are $4.76, 4.19, 0.23$ and $3.41$ respectively. The $pK_a$ value of the strongest carboxylic acid among them is

When propionic acid is treated with aqueous sodium bicarbonate,$CO_2$ is liberated. The '$C$' of $CO_2$ comes from:

The reaction of carboxylic acids with alcohols is known as:

In the following reactions,$P, Q$ and $R$ are

Which reaction is used for the preparation of $\alpha$-bromoacetic acid?

Vedclass Test Series

Exam Paper Generator

Online Exam Module