The Gas Laws

Ideal Gas Constant

An experimentally determined constant whose value in the ideal gas equation depends on the units that are used for pressure.

Ideal Gas Law

Describes the physical behavior of an ideal gas in terms of the pressure, volume, temperature, and number of moles of gas present. PV=nRT For a given amount of gas held at constant temperature, the product of pressure and volume is constant,

Charles's Law

States that the volume of a given amount of gas is directly proportional to its kelvin temperature at constant pressure. T1V2=T2Vi For a given amount of gas at constant pressure, the quotient of the volume and kelvin temperature is constant.

Combined Gas Law

States the relationship among pressure, temperature, and volume of a fixed amount of gas P1V1/T1=P2V2/T2 For a given amount of gas, the product of pressure and volume, divided by the kelvin temperature, is constant.

Molar Volume

The volume that 1 mol occupies at 0.00 ºC and 1.00 atm pressure.

Avagadro's Principle

States that equal volumes of gases at the same temperature and pressure contain equal volumes of gases at the same temperature and pressure contain equal numbers of particles.

Gay-Lussac's Law

States that the temperature of a fixed amount of gas varies directly with the kelvin temperature when the volume remains constant. P1T2=P2T1 For a given amount of gas held at constant volume, the quotient of the pressure and the kelvin temperature is constant.

Boyle's Law

States that the volume of a fixed amount of gas held at a constant temperature varies inversely with the pressure. P1V1=P2V2 For a given amount of gas held at a constant temperature, the product of pressure and volume is constant.

Absolute Zero

Zero on the Kelvin scale. The lowest possible theoretical temperature. The atoms are in the lowest possible energy state.