A sample of an ideal gas occupies 1.0 L at 300 K and 1.0 atm
CHEMISTRY · Single correct · AP · Chemistry · Properties of Substances and Mixtures · Properties of Substances and Mixtures
Problem
A sample of an ideal gas occupies 1.0 L at 300 K and 1.0 atm. The gas is then heated to 600 K while the external pressure is kept constant at 1.0 atm by allowing a piston to move so the volume can change. How does the frequency of particle–particle collisions in the final state compare with that in the initial state?
(a) It is unchanged because collision frequency depends only on the external pressure, which remains constant.
(b) It is higher in the final state because doubling the temperature doubles the collision frequency.
(c) It is lower in the final state because the increase in volume outweighs the temperature effect.
(d) It is lower in the final state because the gas loses kinetic energy while doing work on the surroundings during the expansion.