Ideal Gas



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           Consider an ideal gas of mass m confined to a container of volume V at a pressure P and a temperature T. If the molar mass of the gas is M, then the number of moles n of the gas is given by,

Now the equation of state of the ideal gas is given by,

Here, R is the universal gas constant and is given by, R = 8.315 J/mol.K. If the pressure is expressed in terms of atmospheres and volume in liters then R is expressed as: R=0.08214L.atm/mol.K.

An ideal gas is the one which satisfies the ideal gas equation. The ideal gas equation can also be written as:

Here, , where NA has a numerical value of 6.023 × 10^23.