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Unformatted text preview: PGE 312FALL 2007 Physical and Chemical Behavior of Petroleum Fluids I Homework 2 Problem 24 . The Pressure is 200 psi in both cases (1) (2) Vapor Pressure of nbutane at 200 Vapor Pressure of nbutane at 200 P=200 Psia P= 200 Psia Vapor pressure read from Fig 2.7 of McCain. Problem 25. Matching plots above Process Description From 12 Phase change from gas to liquid as the vapor pressure curve is crossed. From 23 Smooth transition from liquid to gas as we move above the critical point. From 34 Gaseous phase. From 41 Gaseous phase. Problem 27 . The density at the critical point is 10.108 lb/cuft. From L + g 2 = aT + b The average density will be a straight line whose slope can be computed as follows: m = y 2 y 1 x 2 x 1 = 13.157 11.145 253 ( 163) = 0.0224 y = m x x 1 + y 1 = 0.0224 116.7 163 + 11.145 y = 10.11 The density of methane at critical point is 10.11 lb/ft 3 ....
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 Spring '08
 Peters

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