Q5. The critical constants of methane are

P_(c)=45.6atm,V_(c)=98.7cm^(3)mol^(-1)

, and

T_(c)=190.6K

. Calculate the van der Waals parameters of the gas and estimate the radius of the molecules.\ Q6. A sample consisting of

1.0mol

of perfect gas molecules with

CV_(V)=20.8JK^(-1)

is initially at 3.25 atm and

310K

. It undergoes reversible adiabatic expansion until its pressure reaches

2.50atm

. Calculate the final volume and temperature and the work done.

Q5. The critical constants of methane are Pc=45.6atm,Vc=98.7cm3mol1, and Tc=190.6K. Calculate the van der Waals parameters of the gas and estimate the radius of the molecules. Q6. A sample consisting of 1.0mol of perfect gas molecules with CVV=20.8JK1 is initially at 3.25 atm and 310K. It undergoes reversible adiabatic expansion until its pressure reaches 2.50atm. Calculate the final volume and temperature and the work done. Q5. The critical constants of methane are Pc=45.6atm,Vc=98.7cm3mol1, and Tc=190.6K. Calculate the van der Waals parameters of the gas and estimate the radius of the molecules. Q6. A sample consisting of 1.0mol of perfect gas molecules with CVV=20.8JK1 is initially at 3.25 atm and 310K. It undergoes reversible adiabatic expansion until its pressure reaches 2.50atm. Calculate the final volume and temperature and the work done