Question

At constant volume, for a fixed number of moles of a gas, the pressure of the gas increases with increase in temperature due to

• A. Increase in the average molecular speed
• B. Increased rate of collision amongst molecules
• C. Increase in molecular attraction
• D. Decrease in mean free path

Answer 1

The correct option is A

Increase in the average molecular speed

When average speed of molecule is increased due to increase in temperature then the change in momentum during collision between wall of container and molecules of gas also increases.