Homework 2 – 3615 Due Thursday 9/19/19 at the start of class.
Questions marked with ** will be fully graded.
Please justify, explain, and show your work as necessary. Attach additional sheets if needed.
1) A perfect gas undergoes isothermal compression, which reduces its volume by 0.342 L. The final
pressure and volume of the gas are 245 torr and 2.964 dm3, respectively. Calculate the original
pressure of the gas in Pa.
2) A gas mixture consists of 50. mg of methane, 50. mg of argon and 50. mg of neon. The partial
pressure of neon at 33.2oC is 405 torr. Calculate the volume of the mixture in L.
3) A certain gas obeys the equation of state P(V-nb) = nRT, where b and R are constants. Obtain the
numerical value for the compression factor (Z) when Vm = (10.0)*b L/mol.
4) Consider the Virial equation Z = 1 + B’P + C’P2, which describes a gas at a certain temperature.
Given that the gas is at a temperature T* below the Boyle temperature and that B’ and C’ are
temperature dependent, what must be the signs of the constants B’ and C’ at T*?
