Which of the following does not give a bicarb | vedclass

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(C) The bicarbonate test is used to detect the presence of acidic groups that are stronger than carbonic acid $(H_2CO_3)$.$NaHCO_3$ reacts with acids

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Phenol

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(C) The bicarbonate test is used to detect the presence of acidic groups that are stronger than carbonic acid $(H_2CO_3)$.$NaHCO_3$ reacts with acids to evolve $CO_2$ gas if the acid is stronger than $H_2CO_3$ $(pK_a \approx 6.35)$.$1$. $2,4,6$-Trinitrophenol $(pK_a \approx 0.38)$ is a strong acid and reacts with $NaHCO_3$.$2$. $p$-Hydroxybenzenesulfonic acid $(pK_a \approx 2.5)$ is a strong acid and reacts with $NaHCO_3$.$3$. Phenol $(pK_a \approx 10)$ is a very weak acid,much weaker than $H_2CO_3$,and therefore does not react with $NaHCO_3$ to evolve $CO_2$.$4$. $p$-Hydroxybenzoic acid $(pK_a \approx 4.5)$ is stronger than $H_2CO_3$ and reacts with $NaHCO_3$.Thus,phenol does not give the bicarbonate test.

Which of the following does not give a bicarbonate test with $NaHCO_3$?

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