Q7 / 150 · MHT CET 2026 (11 April Shift 2) · Chemistry
Identify the gas adsorbed by solid to the largest extent at their respective critical temperature.
- A$\text{N}_{2(g)}$
- B$\text{O}_{2(g)}$
- C$\text{H}_{2(g)}$
- Correct answerD$\text{SO}_{2(g)}$
Solution
The extent of adsorption of a gas on a solid surface depends on the strength of intermolecular forces. Gases with higher critical temperatures have stronger van der Waals forces of attraction and are more easily liquefiable, leading to a greater extent of adsorption.
The critical temperatures of the given gases are approximately:
$\text{H}_{2} \approx 33 \text{ K}$
$\text{N}_{2} \approx 126 \text{ K}$
$\text{O}_{2} \approx 154 \text{ K}$
$\text{SO}_{2} \approx 430 \text{ K}$
Since $\text{SO}_{2}$ has the highest critical temperature among the given options, it has the strongest intermolecular forces and is adsorbed to the largest extent.
Answer: $\text{SO}_{2(g)}$
The critical temperatures of the given gases are approximately:
$\text{H}_{2} \approx 33 \text{ K}$
$\text{N}_{2} \approx 126 \text{ K}$
$\text{O}_{2} \approx 154 \text{ K}$
$\text{SO}_{2} \approx 430 \text{ K}$
Since $\text{SO}_{2}$ has the highest critical temperature among the given options, it has the strongest intermolecular forces and is adsorbed to the largest extent.
Answer: $\text{SO}_{2(g)}$
Hence, the correct answer is option: 'D'.