2. Consider a 50/50 vapor mixture of n-pentane and n-hexane at 13 bar. Assume

that the vapor phase can be well-described by the Peng-Robinson equation of

state.

a. At what temperature will the vapor begin to condense? What is the

composition of the first drop of liquid.

b. At what temperature will the vapor completely condense? What is the

composition of the last drop of vapor?