Question

What is the compressibility of neon (molar mass = 20) with density 20 g/liter at 27^oC and 100 atm?

(a) 2.1

(b) 3.5

(c) 4

(d) 6.8

I have been asked this question during an interview.

Query is from Compressibility topic in chapter Recycle, Bypass, Purge, Ideal Gases and Real Gases of Basic Chemical Engineering

Answer 1

Correct answer is (c) 4

The explanation is: z = PM/dRT = 100*20/(20*0.0821*300) = 4.