### Calculate the bubble point pressure

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a. Calculate the bubble point pressure at 30 degrees celsius for a mixture  that is 50/50 mole % ethanol (1) - water (2), given that P1 sat = 10.46 kPa and P2 sat = 4.24 kPa, and assuming that the Margules equations with A12 = 1.451 and A21 = 0.9146 represent the nonideality in the binary and assuming O = 1.0

b. Is this assumption that O = 1.0 justified? Expalin in 3 or fewer sentences.

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