A piston/cylinder contains a gas mixture, 50% carbon dioxide and 50% ethane (C₂H₆) (mole basis), at 700 kPa, 35◦C, at which point the cylinder volume is 5 L. The mixture is now compressed to 5.5MPa in a reversible isothermal process. Calculate the heat transfer and work for the process, using the following model for the gas mixture:

a. Ideal gas mixture. 

b. Kay’s rule and the generalized charts.