Question

The temperature of a 5.00-L container of N2 gas is increased from 20 ∘C to 250 ∘C. If the volume is held constant, predict qualitatively how this change affects the following.the average kinetic energy of the molecules

Answer 1

Answer: The average kinetic energy of the molecules will increase.

Explanation: We are given a container having fixed volume of 5.00L and there is an increase in the temperature of the cotainer from 20°C to 250°C.

The average kinetic energy is directly related to the temperature of the gas.

Mathematically,

$K.E._{avg}=\frac{3R}{2N_A}T$

From the above expression, as we increase the temperature of the gas, the average kinetic energy of the gas increases and vice-versa.

In the given question, the temperature of the gas is increasing and hence, the average kinetic energy of the molecules will also increase.