The vapour pressure of water and propanol are 71.9 and 74.0 torr
respectively. The vapor pressures of several solutions of
water–propanol (CH3CH2CH2OH) were determined at various
compositions, with the following data collected at 45°C
The Vapour Pressure Of Water And Propanol Are 71 9 And 74 0 Torr Respectively The Vapor Pressures Of Several Solutions 1 (136.03 KiB) Viewed 36 times
XH20 The vapour pressure of water and propanol are 71.9 and 74.0 torr respectively. The vapor pressures of several solutions of water-propanol (CH3CH2CH2OH) were determined at various compositions, with the following data collected at 45°C: Vapour Pressure (torr) w 0 74.0 0.15 77.3 0.37 80.2 0.54 81.6 0.69 80.6 a) Are solutions of water and propanol ideal, or a positive or negative deviation from Raoult's Law? Explain. (2 points) b) Predict the sign of AHsoln for water-propanol solutions. (2 points) c) Are the interactive forces between propanol and water molecules weaker than, stronger than, or equal to the interactive forces between the pure substances? Explain. (2 points) d) Which of the solutions in the data would have the lowest normal boiling point? (2 points) 0.83 78.2 1.00 71.9
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