HW 1 solutions - ECH 152B Winter 2017 Roland Faller...

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ECH 152B, Winter 2017, Roland Faller Solution for Homework 1, January 19, 2017 Problem 1. Assume a benzene–toluene mixture obeys Raoult’s law. Calculate (a) y B and P if x B = 0 . 55 and T = 412 K (b) x T and T if y B = 0 . 35 and p = 120 kPa y is the (molar) concentration in the vapor phase, x in the liquid phase. (c) Give a short reason why (or why not) Raoult’s law is a good approximation for this system at these conditions.

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