Question

Use the van der Waals equation of state to calculate the pressure of 3.70 mol of CCI₄ at 499K in a 3.70 L vessel. Van der Waals constants can be found in the van der Waals constants table. 

Use the ideal gas equation to calculate the pressure under the same conditions. 

In a 15.00 L vessel, the pressure of 3.70 mol of CCI₄ at 499 K is 10.1 atm when calculated using the ideal gas equation and 9.2 atm when calculated using the van der Waals equation of state. 

Why is the percent difference in the pressures calculated using the two different equations greater when the gas is in the 3.70 L vessel compared to the 15.00 L vessel?

Answer 1