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If the pressure of a gas at 27^oC is 15 mm Hg, what will be its pressure at 127^oC, use B = 5 X 10^3, C = 0, T is in kelvin and P is in mm Hg?(a) 579 mm Hg(b) 775 mm Hg(c) 961 mm Hg(d) 999 mm HgI had been asked this question during an online interview.My enquiry is from Modeling and Predicting Vapor Pressure topic in division Real Gases: Equations of State, Single Component Two Phase Systems, Saturation & Condensation of Basic Chemical Engineering

Answer»

Right option is (c) 961 MM Hg

The best explanation: LN P1/P2 = B (1/T2 – 1/T1), => ln 15/P2 = 5 X 10^3 (1/400 – 1/300), P2 = 961 mm Hg.



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