JEE Main 2014 · 19 Apr · Shift 1 · Chemistry Q56

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ChemistrySingle correct+4 / -1Question 56 of 90

Which one of the following compounds will not be soluble in sodium bicarbonate ?

2, 4, 6 - Trinitrophenol

Benzoic acid

o - Nitrophenol

Benzene sulphonic acid

Answer and worked solution

Official answer: C

Only acids stronger than carbonic acid dissolve in $\ce{NaHCO3}$ . Picric acid, benzoic acid and benzenesulphonic acid do. o-Nitrophenol ( $pK_a\approx7.2$ , intramolecular H-bond) does not.

Topics:Acidity and basicity Phenols

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JEE Main 2014 · 19 Apr · Shift 1, Chemistry question 56