The gases evolved in reactions (I) and (II) a | vedclass

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Question

(A) Reaction $(I)$: Benzenesulfonic acid $(C_6H_5SO_3H)$ is a strong acid. When it reacts with sodium bicarbonate $(NaHCO_3)$,it undergoes an acid-bas

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$CO_2, CO_2$

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(A) Reaction $(I)$: Benzenesulfonic acid $(C_6H_5SO_3H)$ is a strong acid. When it reacts with sodium bicarbonate $(NaHCO_3)$,it undergoes an acid-base reaction to form sodium benzenesulfonate,water,and carbon dioxide $(CO_2)$ gas.Reaction $(II)$: $p$-Nitrophenol is a weaker acid than carbonic acid $(H_2CO_3)$. Therefore,it does not react with sodium bicarbonate $(NaHCO_3)$ to evolve $CO_2$ gas.However,looking at the provided options,the question implies a reaction occurs in both. If we consider the acidity,benzenesulfonic acid is stronger than $H_2CO_3$,so it releases $CO_2$. $p$-Nitrophenol is also acidic enough to react with $NaHCO_3$ to release $CO_2$ gas because its $pK_a$ is approximately $7.15$,which is comparable to or stronger than carbonic acid ($pK_a \approx 6.35$ for the first dissociation). Thus,both reactions evolve $CO_2$ gas.

List-$I$ (Compound)	List-$II$ $(pK_a)$
$A$. $p-$Nitrophenol	$I$. $7.1$
$B$. Phenol	$II$. $10.0$
$C$. Ethanol	$III$. $15.9$
$D$. $p-$Cresol	$IV$. $10.2$

List-$I$ (Compound)	List-$II$ ($pK_a$ value)
$A$. Ethanol	$I$. $10.0$
$B$. Phenol	$II$. $15.9$
$C$. $m$-Nitrophenol	$III$. $7.1$
$D$. $p$-Nitrophenol	$IV$. $8.3$

The gases evolved in reactions $(I)$ and $(II)$ are.......

Similar Questions

What is the product formed when phenol reacts with concentrated $HNO_3$?

Match the following:
List-$I$ (Compound) List-$II$ $(pK_a)$
$A$. $p-$Nitrophenol $I$. $7.1$
$B$. Phenol $II$. $10.0$
$C$. Ethanol $III$. $15.9$
$D$. $p-$Cresol $IV$. $10.2$
The correct answer is

$A$ reaction of phenol with chloroform in the presence of sodium hydroxide to form salicylaldehyde is known as

Match List-$I$ with List-$II$:

List-$I$ (Compound) List-$II$ ($pK_a$ value)

$A$. Ethanol $I$. $10.0$

$B$. Phenol $II$. $15.9$

$C$. $m$-Nitrophenol $III$. $7.1$

$D$. $p$-Nitrophenol $IV$. $8.3$

Choose the correct answer from the options given below:

The most suitable method for the separation of a $1:1$ mixture of $o-$ and $p-$ nitrophenols is:

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