Fugacity from EOS and NIST

Calculating fugacity from an EOS and from NIST data

[@javiedkawification]

i believe the specific volume for your second example should be much lower than 3.6m3/mol. as i did using solver. the answer is ard 0.00036m3/mol. but i did it without doing any unit conversion for p= [RT/(v-b)]- [a/v^2] can anyone check

[@echo0204]

I saw different methods with Peng-Rob by first calculating roots of Z, and then compute V and Fugacity, subsequently. Which method is right? Thank you!

[@solimandawood100]

If I have Mixture of C1 0.0237, C4 0.4658 and C10 0.5106, I calculated ai for each component ai (C1 ) 6176.4, ai (C4) 57229.9 and ai (C10) 306727.9, then I calculated αi for each component αi (C1) 0.6660, αi (C4) 1.0222 and αi (C10) 1.4329... Can you please help me in how to solve the term Ψi= Σyj (aiajαiαj)^0.5 (1-kij), how to do it in excel sheet. suppose that Kij=0

[@InvestE111]

How did you use the fugacity coefficient to calculate the fugacity?

[@TGUGCL]

how did you get the values of H dep and S dep from NIST at T=350 K and P= 1 and 5 MPa ??... i cant find them in webbook.nist.gov/cgi/cbook.cgi?Name=ethane&Units=SI