Project ForgeProcess Calculations
Vapor-Liquid Equilibrium
GATE 2010
Medium
An equimolar liquid mixture of species 1 and 2 is in equilibrium with its vapour at 400K. At this temperature, the vapour pressures are P1sat=180kPa and P2sat=120kPa. Assuming that Raoult's law is valid, the value of y1 is
- A0.30
- B0.41
- C0.50
- 0.60
Explanation
x1=x2=0.5. P=x1P1sat+x2P2sat=0.5×180+0.5×120=150kPa. y1=x1P1sat/P=0.5×180/150=0.6.
Source: GATE CH 2010 (2010)
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