Chemistry - Aromatic Hydrocarbon Question with Solution | TestHub
Compound ' P ' on nitration with dil. yields two isomers ( A ) and ( B ). These isomers can be separated by steam distillation. Isomers (A) and (B) show the intramolecular and intermolecular hydrogen bonding respectively. Compound (P) on reaction with conc. yields a yellow compound 'C', a strong acid. The number of oxygen atoms is present in compound ' C ' .
Answer:
Solution:
Question Explanation: Identify the number of oxygen atoms present in compound C, a yellow-colored strong acid formed by the reaction of compound P with concentrated HNO₃.
Concept: This question is based on the nitration of phenol.
Solution:
1. Nitration with dilute HNO₃ yields two isomers: Isomer A, o-nitrophenol, which is steam volatile due to intramolecular H-bonding, and Isomer B, p-nitrophenol, which is non-volatile due to intermolecular H-bonding.
2. Nitration with concentrated HNO₃ and H₂SO₄ produces Compound C, which is 2,4,6-trinitrophenol, commonly known as Picric Acid.
Total 7 oxygen atoms are present in Picric (1 from the hydroxyl group and 6 from the three nitro groups)