- #1

- 115

- 24

## Main Question or Discussion Point

Hi

My question is related to interpretation of temperature and pressure in gases on the basis of kinetic molecular theory.

According to it, both temperature and pressure are proportional to average translational kinetic energy of the gas molecules.

Now in a situation where an ideal gas in confined in a cylinder and is heated and it is an isothermal process i.e the temperature is kept constant. How is it possible to increase the pressure according to above stated rule. Now if temperature is constant, average KE should be constant which also determines the pressure. Where I am confused is , if average KE is constant, both temperature and pressure should be simultaneously constant. One of them can't be kept constant while the other changes.

Please help.

Regards

Zahid

My question is related to interpretation of temperature and pressure in gases on the basis of kinetic molecular theory.

According to it, both temperature and pressure are proportional to average translational kinetic energy of the gas molecules.

Now in a situation where an ideal gas in confined in a cylinder and is heated and it is an isothermal process i.e the temperature is kept constant. How is it possible to increase the pressure according to above stated rule. Now if temperature is constant, average KE should be constant which also determines the pressure. Where I am confused is , if average KE is constant, both temperature and pressure should be simultaneously constant. One of them can't be kept constant while the other changes.

Please help.

Regards

Zahid