Question

The steam volatile compounds among the following are:

• A. (A) and (B) Only
• B. (A),(B) and (C) Only
• C. (B) and (D) Only
• D. (A) and (C) Only

Hint:

Steam volatile compounds are generally low-boiling compounds that can vaporize and mix with steam at low temperatures.

Answer 1

The Correct Option is A

To solve this problem, we need to understand the relationship between steam volatility, intermolecular forces (especially hydrogen bonding), and molecular structure.

1. Understanding Steam Volatility:
Steam volatile compounds can be distilled using steam distillation, meaning they vaporize readily in the presence of steam. This is favored by lower boiling points and weaker intermolecular forces.

2. The Role of Hydrogen Bonding:
Intramolecular hydrogen bonds (within a molecule) increase volatility because they reduce the molecule's ability to form strong intermolecular interactions. Intermolecular hydrogen bonds (between molecules) decrease volatility by increasing the strength of the interactions between molecules.

3. Identifying Key Factors:
The key factor determining steam volatility in this context is the presence of intramolecular hydrogen bonds. Molecules with these bonds are more volatile due to reduced intermolecular attraction.

4. Conclusion:
Molecules with intramolecular hydrogen bonds are more likely to be steam volatile.

Final Answer:
Molecules with intramolecular hydrogen bonds are more likely to be steam volatile are A and B