Question

12.0 moles of gas are in a 7.00 LL tank at 24.7 ∘C∘C . Calculate the difference in pressure between methane and an ideal gas under these conditions. The van der Waals constants for methane are a=2.300L2⋅atm/mol2a=2.300L2⋅atm/mol2 and b=0.0430 L/molb=0.0430 L/mol.

Given that for N2,a=1.39L⋅atm/mol2N2,a=1.39L⋅atm/mol2 and b=0.0391L/molb=0.0391L/mol, calculate the pressure of the gas according to the van der Waals equation.

Express your answer in atmospheres to three significant figures.

Answer 1