A mixture of hydrocarbons has the following molar composition:

.

Substance	% molar
Methane	1
Ethane	15
Propane	25
Isobutane	14
n-butane	25
n-pentane	20
total	100

a) What temperature is required to condense 100% of the steam?

b) If 100,000 ft3 at Standard Conditions (S.C.) of the original gas are introduced into a flash separator at 100 psia and 90F: What size should be the pump that will handle the liquid from the separator, Express the size of the pump in gallons per minute (GPM).

NOTE: Rackett's equation can be used to estimate the molar volume of saturated liquid (equation 3.72 page 109 Smith & Van Ness)

c)

Which substance has the greatest effect on the bubble point? And which one has more effect at the dew point?