Why does the pressure of a gas increase when the temperature of the gas is incre

Question

Why does the pressure of a gas increase when the temperature of the gas is increased? Select all that apply. Choose one or more: A. The increase in temperature causes more collisions of the gas particles with the walls. B. As the temperature of the gas increases, the gas particles increase in size causing a higher pressure. O C. The average kinetic energy of the gas increases as the temperature increases, causing more energetic collisions with the walls. D. As the temperature of the gas increases, the volume of the gas decreases causing the pressure to increase.

Explanation / Answer

According to pressure law,

If V is constant then P/T will also be constant and thus we can say that P is directly proportional to the temperature. When the temperature is increased, the particles of gas in the container moves with a higher energy and as a result the particles will have more collisions with each other and also with the sides of the container and consequently the pressure increases. Moreover, pressure of gas increases with temperature because the increase in temperature causes an increase in the kinetic energy of the molecules. This increase in kinetic energy causes an increase in collisions between the molecules which results in an increase in pressure.

So. the statements A and C will be correct.

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