Problem: Estimate the external pressure at which ethanol will boil at 60 oC.

FREE Expert Solution

The plot shows the boiling point of each compound at the corresponding temperature and pressure.

  • From the plot, the normal boiling point of ethanol (at 760 torr = 1 atm) is 78.3 °C


Using the plotethanol will boil at 60°C at a pressure of: 

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Problem Details


A graph of vapor pressure in torr versus temperature in degrees Celsius shows curves for diethyl ether (normal boiling point 34.6 Celsius at 760 torr), ethanol (normal boiling point 78.3 Celsius at 760 torr), water (normal boiling point 100 Celsius at 760 torr), and ethylene glycol (no normal boiling point listed). The curve for diethyl ether has points (0, 200), (17, 400), (20, 450), (28, 600), (35, 800), (40, 1000). The curve for ethanol has points (0, 10), (20, 15), (40, 160), (48, 200), (60, 340), (64, 400), (72, 600), (80, 800), (82, 1000).

Estimate the external pressure at which ethanol will boil at 60 oC.

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Intermolecular Forces and Physical Properties concept. If you need more Intermolecular Forces and Physical Properties practice, you can also practice Intermolecular Forces and Physical Properties practice problems.

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Based on our data, we think this problem is relevant for Professor Casey's class at UNR.