Which of the following will not be soluble in sodium bicarbonate?
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a
2, 4, 6,-Trinitrophenol
b
Benzoic acid
c
p-Nitrophenol
d
Benzenesulphonic acid
answer is C.
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Detailed Solution
2, 4, 6-Trinitrophenol, benzoic acid and benzenesulphonic acid are more acidic than carbonic acid and hence dissolve in NaHCO3 solution. In contrast, o-nitrophenol is less acidic than carbonic acid and hence does not dissolve in NaHCO3 solution.