Question

The Ideal Gas Law is applicable at

• A. Low $T$, Low $P$
• B. High $T$, Low $P$
• C. Low $T$, High $P$
• D. High $T$, High $P$

Answer 1

The correct option is B

High $T$, Low $P$

Explanation for correct option

(B)High $T$, Low $P$

Ideal gas law

• The ideal gas law states that the product of the volume and pressure of one gram molecule of an ideal gas is equal to the product of the universal gas constant, and the absolute temperature of the gas.
• When the volume occupied is large enough to ignore the volume of the molecules relative to it, gases show ideal behavior.
• The Ideal Gas Law is applicable at high temperature and low pressure only.
• Because of the system's low pressure, there are fewer intermolecular interactions between the gas particles.

Explanation for incorrect option

The Ideal Gas Law is applicable at high temperature and low pressure only. Hence, options (A), (C), and (D) are incorrect.

Hence, option (B) is correct. The Ideal Gas Law is applicable at high temperature and low pressure only.