Question

According to the ideal gas law, a 10.13 mol sample of oxygen gas in a 0.8104 L container at 499.8 K should exert a pressure of 512.7 atm. By what percent does the pressure calculated using the van der Waals' equation differ from the ideal pressure? For O₂gas, a = 1.360 L²atm/mol² and b = 3.183×10^-2 L/mol.

Answer: %

Hint: % difference = 100 × (P _ideal - P_{van der Waals}) / P _ideal