Comprehensive fitting exercise (200 points)

Your task is to calculate the fugacity coefficient φ of HCN at concentration c = 1/Vm = 8 mol/L from the concentration–pressure data given below.
Use the ideal gas constant value R = 8.31446 J/(mol K).
The temperature T is only slightly above the critical temperature which makes fitting difficult.

The formula is (details in Czech)

ln φ(c) = ∫0c ([ z(c') − 1 ] /c') dc' − ln z(c) + z(c) − 1,
where the compressibility factor is defined as
z(c) = p(c)/cRT.

Hints:

Enter your initials:   (max 5 characters, case sensitive, no spaces)
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Your data:
Temperature [K]:
Concentration [mol/L]:
Pressure [MPa]:
σ (std.err.) [MPa]: