PETE 2032 Chapter 3

The properties of gases _____________________ from those of liquids, mainly because the molecules in a gas are much further apart than in a liquid.

homogeneous, low-density fluids, which expand to fill completely the vessel in which they are contained

What has a much greater effect on the density of what?

describes the behavior of real gases at low pressures and high temperatures

Is ideal gas a hypothetical substance?

• True

• False

The EoS for ideal gases (the Ideal Gas Law) will be developed _______________________________________________________.

• first from experimental evidence and then from the kinetic gas theory.

• first from kinetic gas theory and then experimental evidence.

will be used as the basis of EoS for real gases

Ideal gas hypotheses

• The volume occupied by the molecules is insignificant compared to the volume occupied by the gas (i.e., the container volume).

• There are no attractive or repulsive forces between the molecules or between the molecules and the container walls.

• All collisions (between the molecules and the container walls) are perfectly elastic, i.e., there is no loss of kinetic energy upon collision.

• There are attractive or repulsive forces between the molecules or between the molecules and the container walls.

• All collisions (between the molecules and the container walls) are perfectly inelastic, i.e., there is no loss of kinetic energy upon collision.

Boyle's Law: the volume of an ideal gas is ___________________ to pressure when ________________ is kept constant.

Boyle's Law formula