chem 202 uiuc What are the partial pressures of the benzene and toluene above the solution? And what's the total vapour pressure of the solution?

Name: Chemistry of Solutions, Lecture 3 Notes
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Chemistry of Solutions Course Number: 202-NYB-05 Lecture no. 3 Date: Thursday, September 1, 2016 Professor: Nadia Schoonhoven Topics Covered: determining molar mass from Raoult's law, solution composition, deviations from Raoult's law, vapour pressure, boiling-point elevation, and freezing-point depression. Exercise: Calculate the expected vapour pressure above a solution containing 158.0 g of sucrose (table sugar, molar mass = 342.3 g) in 643.5 mL of water at 25°C. At this temperature, the density of water is 0.9971 g/mL and the vapour pressure is 23.76 torr. Given: 158.0 g of sucrose, molar mass = 342.3 g, 643.5 mL water, 25°C, density of water at 25°C is 0.9971 g/mL. Calculate the expected vapour pressure above the sol