Which of the following derivatives of phenol is most likely to give effervescence with dilute solution of sodium bicarbonate ?

Question

Which of the following derivatives of phenol is most likely to give effervescence with dilute solution of sodium bicarbonate ? (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

2, 4, 6-trinitrophenol is highly acidic and its pKa value is comparable to carboxylic acid.

Q. Which of the following derivatives of phenol is most likely to give effervescence with dilute solution of sodium bicarbonate ?