
DENSITY OF HYDROCARBONS (SPECIAL CASE) Gas real (Pressure > 3 atm), you know the formula of density is :
However, if you want to estimate the density of mixture, it is possible you would introduce some correction. When you have in the mixture, vapor of water, H_{2}, O_{2}, N_{2} etc, you need to considerate the hydrocarbons below a pressure equal instead of . This change affected only the compute of compressible factor. (y_{HC} is fraction molar of gas). where z is the average compressible factor z_{HC} is the average compressible factor below a pressure equal z_{1}, z_{2} is the compressible factor of compound 1, 2 y is the fraction molar of each compound. Compute z_{HC :} (this is the only change) In order to computer it you need to have value :
