When benzene sulphuric acid and p-nitrophenol are treated with $N a H C O_{3}$ , the gases released, respectively are :

S O_{2}, N O_{2}

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S O_{2}, N O

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S O_{2}, C O_{2}

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C O_{2}, C O_{2}

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Solution

The correct option is D $C O_{2}, C O_{2}$
When benzene sulphuric acid and p-nitrophenol are treated with $N a H C O_{3}$ , the gases released, respectively are $C O_{2}, C O_{2}$ .
The balanced chemical equation for the reaction of benzene sulphonic acid with sodium bicarbonate is as shown below.
$P h S O_{3} H + N a H C O_{3} \to P h S O_{3} N a + C O_{2} + H_{2} O$
The balanced chemical equation for the reaction of p-nitro phenol with sodium bicarbonate is as shown below.
$p - O_{2} N - C_{6} H_{4} - O H + N a H C O_{3} \to p - N O_{2} - C_{6} H_{4} - O N a + C O_{2} + H_{2} O$

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