Which of the following statement(s) is/are true about picric acid?

Question

Which of the following statement(s) is/are true about picric acid? (A) Picric acid is obtained in less quantity during the reaction of phenol with conc. HNO 3 (B) It is also prepared by treating phenol with conc. H 2 SO 4 followed by conc. HNO 3 (C) Both (a) and (b) (D) None of the above

Tardigrade Admin · Accepted Answer

When phenol directly reacts with conc. HNO 3, it gets first converted into quinone because conc. HNO 3 oxidises phenol. Hence, picric acid obtained is low in yield.

Picric acid can also be prepared by treating phenol with conc. H 2 SO 4 (which converts it to phenol-2,4-disulphonic acid) and then with concentrated nitric acid.

Q. Which of the following statement(s) is/are true about picric acid?

Picric acid is obtained in less quantity during the reaction of phenol with conc. $H N O_{3}$

It is also prepared by treating phenol with conc. $H_{2} S O_{4}$ followed by conc. $H N O_{3}$

Both (a) and (b)

None of the above

Q. Which of the following statement(s) is/are true about picric acid?

Picric acid is obtained in less quantity during the reaction of phenol with conc. HNO3​

It is also prepared by treating phenol with conc. H2​SO4​ followed by conc. HNO3​

Both (a) and (b)

None of the above

Picric acid is obtained in less quantity during the reaction of phenol with conc. $H N O_{3}$

It is also prepared by treating phenol with conc. $H_{2} S O_{4}$ followed by conc. $H N O_{3}$