Acentric factor for EOS calculation 2

[drFCraft]

Hi all, my first post =)


I am performing a calculation using the SRK-EOS and i data on the acentric factor for H2S and CO2. I know its probably somewhere in Perry's, but i cant find it right now...

Any help would be appreciated appreciated.

 

[insult2injury]

CO[sub]2[/sub] -> 0.22394

H[sub]2[/sub]S -> 0.1005

I2I

 

[25362]

CO2 [→] 0.224
H2S [→] 0.094

 

[insult2injury]

Is the 0.094 the correct value? I know that's what's published in Perry's 7th, but the 1.005 is what is published by NIST. I tend to believe NIST over most other sources.

I2I

 

[drFCraft]

For my calculation @ 300 bars, ambient temp, going from omega=1.004 --> 0.094 for CO2 makes a difference in the 5th decimal....

 

[25362]

The values I reported were taken from Introduction to Chemical Engineering Thermodynamics by Smith, Van Ness and Abbott. McGraw-Hill.

The values by Kenneth S. Pitzer in his book Thermodynamics (MfGraw-Hill) are:

CO2 [→] 0.223
H2S [→] 0.100