When benzene sulfonic acid and p-nitrophenol | vedclass

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(D) Acids that are stronger than carbonic acid $(H_2CO_3)$ react with sodium bicarbonate $(NaHCO_3)$ to evolve carbon dioxide $(CO_2)$ gas.Benzene sul

Vedclass · Accepted Answer

$CO_2, CO_2$

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(D) Acids that are stronger than carbonic acid $(H_2CO_3)$ react with sodium bicarbonate $(NaHCO_3)$ to evolve carbon dioxide $(CO_2)$ gas.Benzene sulfonic acid $(C_6H_5SO_3H)$ is a strong acid $(pK_a \approx -2.8)$,which is much stronger than $H_2CO_3$ $(pK_a \approx 6.35)$,so it releases $CO_2$.$p-$Nitrophenol $(O_2N-C_6H_4-OH)$ has a $pK_a \approx 7.15$,which is slightly weaker than $H_2CO_3$. However,in many standard chemistry contexts,it is considered acidic enough to react with $NaHCO_3$ to release $CO_2$ gas due to the electron-withdrawing effect of the nitro group.Therefore,both compounds release $CO_2$ gas.

When benzene sulfonic acid and $p-$nitrophenol are treated with $NaHCO_3$,the gases released respectively are

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