Question

For a gas obeying vander Waal's equation, the compressibility factor at critical point is –

• A. 0.375
• B. 2.740
• C. 1.050
• D. 0.450

Answer 1

Answer: (A)

0.375

Answer 2

Z_C = $\frac{P_{C}V_{C}}{RT_{C}}$ = $\frac{3}{8}$ = 0.375