Question

What is the compressibility factor of a liquid of molar mass 90 g and density 10 g/liter at 27^oC and 2 atm?

(a) 0.14

(b) 0.39

(c) 0.51

(d) 0.73

This question was addressed to me in an interview for internship.

My query is from Compressibility in portion Recycle, Bypass, Purge, Ideal Gases and Real Gases of Basic Chemical Engineering

Answer 1

Right answer is (d) 0.73

Explanation: z = PM/dRT = 2*90/(10*0.0821*300) = 0.73.