Question

What would happen to the pressure of a closed sample of gas whose temperature increased while its volume decreased? Explain your reasoning in terms of the kinetic molecular theory of gases.

Answer 1

According to the kinetic molecular theory of gases, when the temperature of a closed sample of gas increases while its volume decreases, the pressure of the gas will increase.

Step-by-step explanation:

According to the kinetic molecular theory of gases, when the temperature of a closed sample of gas increases while its volume decreases, the pressure of the gas will increase. This can be explained by two gas laws: Amonton's law and Avogadro's law. Amonton's law states that if the temperature is increased, the average speed and kinetic energy of the gas molecules increase.

If the volume is held constant, the increased speed of the gas molecules results in more frequent and more forceful collisions with the walls of the container, therefore increasing the pressure. Avogadro's law states that when the amount of gas increases at a constant pressure, volume increases to yield a constant number of collisions per unit wall area per unit time.

Answer 2

As the temperature increases, the average kinetic energy increases as does the velocity of the gas particles hitting the walls of the container. The force exerted by the particles per unit of area on the container is the pressure, so as the temperature increases the pressure must also increase.

I hope this will help you if not soo sorry :)