
• Ideal gas equation in terms of density (Relationship between molar mass and density of a gas)
p = dRT / M (M is the molar mass, d is the density)
• Values of the gas constant :
0.0821 L atm K-1 mol-1
82.1 cm3 atm K-1 mol-1
0.083 bar dm3 K-1 mol-1
- In the C.G.S. units
8.314 x 107 ergs K-1 mol-1
- In S.I. units
8.314 J K-1 mol-1 (107erg = I J)
- In terms of calories
1.987 calories K-1 mol-1 (4.184 J = I calorie)