[faj07]

Hello,

I was looking for some help with this possible statements about the KMT, to double check which ones are right and which ones are not.

A) A real gas behaves ideally when confined at very high pressures.
B) Heavy molecules will effuse more slowly than lighter molecules under the same conditions.
C) The predominant reason why real gases deviate from ideal behavior is the large size of their molecules.
D) The molar volume of an ideal gas depends upon the molar mass of the gas.
E) Atoms within a solid are not moving in any way.
F) The kinetic molecular theory explains how electrons travel through a copper wire.

[Yggdrasil]

Which ones do you think are correct and which ones do you think are not?

[faj07]

I believe that A D and F are correct but I am not sure

[faj07]

thank you for yur comments, A was indeed wrong the only right one was
that Heavy molecules will effuse more slowly than lighter molecules under the same conditions.

Appreciate it, Felix

[Yggdrasil]

thank you for yur comments, A was indeed wrong the only right one was
that Heavy molecules will effuse more slowly than lighter molecules under the same conditions.

Appreciate it, Felix

F may be correct as well, but I'm not 100% sure.

As far as A goes, nothing acts ideally away from standard temperatures and pressures.

This is absolutely incorrect!  Gasses behave more ideally at lower pressures and higher temperatures than standard conditions.  Deviations from ideal behavior are primarily due to intermolecular interactions.  Under conditions of low pressure (molecules are very far apart and collisions are infrequent) and high temperature (more thermal energy available to overcome intermolecular interactions), real gasses will behave more like ideal gasses.