density of gas mixtures
density of gas mixtures
(OP)
Hi
I need to calculate the density of a gas mixture
(60% oxygen/40% nitrogen) 20 deg C, 1 ata.
Is it as simple as using the densities of the individual gases and the proportions or are there other effects to take into account.
thanks
Jamie





RE: density of gas mixtures
RE: density of gas mixtures
RE: density of gas mixtures
RE: density of gas mixtures
Z is the compressibility factor for the mixture. You can take as 1.0 for your mixture and P and T.
MW is the molecular weight of the mixture. I'll assume the 60/40 split is on a vol or mol basis so the density of the mixture is 0.6 * 32 + .4 * 28 (these are approximate MW for O2 and N2, you can use more precise ones if you need.
Density is in lb/ft3
R is the gas constant, 10.73 psia*ft3/lbmole deg R
T is the temperature in deg R
P is the pressure in psia.