Assertion : Ideal gas equation is nearly valid for real gases at low pressure and high temperature.
Reason : Molecular interactions are negligible under this condition.

Options

A. If both (A) and (R) are correct and (R) is the correct explanation of (A).
B. If both (A) and (R) are correct, but (R) is not the correct explanation of (A).
C. If (A) is correct, but (R) is incorrect.
D. If both (A) and (R) are incorrect.

Answer

A

Explanation

According to kinetic theory of gases,
i) The volume occupied by the gas molecules is negligible as compared to the total volume of the gas.
ii) The forces of attraction or repulsion between the gas molecules are negligible. These two assumptions are correct only if the temperature is high and pressure is low.