First slide

Acidic Strength

Question

Which of the following will not be soluble in sodium hydrogen carbonate?

Difficult

A

2,4,6 - Trinitrophenol
B

Benzoic acid
C

O - Nitrophenol
D

Benzenesulphonic acid

Solution

The reaction is as follows:
$Acid + {NaHCO}_{3} ⟶ \underset{(s o l u b l e)}{Sodium salt of acid} + H_{2} {CO}_{3}$
Among all the given compounds, o-nitrophenol is weaker
acid than ${HCO}_{3}^{-}$ . Hence, it does not react with ${NaHCO}_{3}$ .

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