Characteristics equation of a gas | Formula

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Characteristics equation of a gas is the modified equation of general gas. If the volume in a general gas is taken as 1 kg of gas, then the constant C is represented by another constant R. 

 Thus, the general gas equation may be rewritten as follows. 

P V = R T

 R = Characteristics gas constant or Simply gas constant

 For any mass m kg of gas, the equation may be rewritten as follows.

 m P V = R T OR P V = m R T

 P = m / V × R T

 Let we take m / V = ƿ 

 P = ƿ R T
Where, P = Pressure ( 1 bar = 100 KN/m2)
R = Gas constant (287 J / kg K = 0287 k J / kg K)
ƿ = Density of the given gas

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