Question

Assertion (A): A mixture of o-nitrophenol and p-nitrophenol can be separated by steam distillation.
Reason (R): o-nitrophenol is steam volatile due to intermolecular hydrogen bonding.

• A. Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
• B. Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
• C. Assertion (A) is true, but Reason (R) is false.
• D. Assertion (A) is false, but Reason (R) is true.

Hint:

When dealing with separation methods, consider the physical properties like volatility and boiling points to determine the appropriate technique.

Answer 1

The Correct Option is A

Since o-nitrophenol has hydrogen bonding, it is more volatile and thus can be separated from p-nitrophenol by steam distillation. The assertion is correct, and the reason is valid as well. Intermolecular hydrogen bonding in o-nitrophenol contributes to its steam volatility.