Chemical Engineering > GATE 2019 > Distillation
A fractionator recovers 95 mol % n-propane as the distillate from an equimolar mixture of n-propane and n-butane. The condensate is a saturated liquid at 55 °C. The Antoine equation is of the form, ln(psat [in bar]) = A - B/(T[in K] + C), and the constants are provided below:
n-propane: A=9.1058, B=1872.46, C=-25.16
n-butane: A=9.0580, B=2154.90, C=-34.42
Assuming Raoult''s law, the condenser pressure (in bar) is ______ (rounded off to one decimal place).'
n-propane: A=9.1058, B=1872.46, C=-25.16
n-butane: A=9.0580, B=2154.90, C=-34.42
Assuming Raoult''s law, the condenser pressure (in bar) is ______ (rounded off to one decimal place).'
Correct : 18.0
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