Which compound does not react with NaHCO_3? | vedclass

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Question

(C) The reaction of a compound with $NaHCO_3$ depends on its acidity. Compounds that are more acidic than carbonic acid ($H_2CO_3$,$pK_a \approx 6.35$

Vedclass · Accepted Answer

Carbolic acid (phenol)

Vedclass · Answer

(C) The reaction of a compound with $NaHCO_3$ depends on its acidity. Compounds that are more acidic than carbonic acid ($H_2CO_3$,$pK_a \approx 6.35$) will react with $NaHCO_3$ to evolve $CO_2$ gas.$1$. Squaric acid $(pK_a \approx 1.5)$ is a strong acid and reacts with $NaHCO_3$.$2$. Salicylic acid $(pK_a \approx 2.97)$ is more acidic than carbonic acid and reacts with $NaHCO_3$.$3$. Acetic acid $(pK_a \approx 4.76)$ is more acidic than carbonic acid and reacts with $NaHCO_3$.$4$. Carbolic acid (phenol) $(pK_a \approx 10)$ is a very weak acid,significantly less acidic than carbonic acid. Therefore,it does not react with $NaHCO_3$ to evolve $CO_2$ gas.

Acid	$pKa$
$(a)$ Phenol	$(i)$ $16$
$(b)$ $p$-Nitrophenol	$(ii)$ $0.78$
$(c)$ Ethanol	$(iii)$ $10$
$(d)$ Picric acid	$(iv)$ $7.1$

Which compound does not react with $NaHCO_3$?

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Acid $pKa$
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$(b)$ $p$-Nitrophenol $(ii)$ $0.78$
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$(d)$ Picric acid $(iv)$ $7.1$

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