Chem 1000- Gases: Ideal Gas Law & General Gas Equation

THE IDEAL GAS LAW EQUATION

Combining the three laws, Boyle's Law, Charles' Law & Avogadro's Law, gives us what is called the IDEAL GAS LAW. This law can be summed up with the equation:

A gas whose behaviour conforms to the ideal gas equation is called an ideal or perfect gas. As you see in the above equation, there is a value called R. R refers to the gas constant which its value depends on the units used to express pressure and volume. The value of R is:

1. R= 0.082057 atm L/mol K
2. R= 8.3145 Pa m^3/ mol K
3. R= 8.3145 J/mol K

GENERAL GAS LAW EQUATION

The general gas law equation is often applied in cases where one or two of the gas properties are held constant and the equation can be simplified by eliminating those constants.

APPLICATIONS OF IDEAL GAS LAW

MOLAR MASS DETERMINATION

GAS DENSITIES

The density of a gas at STP can be easily calculated by dividing its molar mass by the molar volume at STP (22.711 L/mol).