B

Antoine vapor-pressure equation: In P = A -

For propylene, ,4 = 15.7027, £ = 1807.53, C =-26.15

Tc =365.0 K, Pc= 4620 kPa, « = 0.148, Vn =6.8760 X 10"5 m3 mol"1

Solution: Since the boiling point of propylene (225.4K) is much smaller than that of benzene (353.3K), propylene is denoted by "1" as the light component, and benzene by "2" as the heavy component.

From the Antoine equation for propylene (InP^ = A-^-^ at 7 = 383.15K),

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