Real gases - Deviations of real gases from ideal behavior A Real gas does not behave completely according to the assumptions of the kineticmolecular

# Real gases - Deviations of real gases from ideal behavior A...

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Deviations of real gases from ideal behavior A. Real gas - does not behave completely according to the assumptions of the kinetic- molecular theory B. Johannes van der Waals 1. accounted for this deviation by stating particles of real gases occupt space and exert attractive forces on each other Pressure I. Background info A. To describe a gas, you need to know four things 1. Volume 2. Temperature 3. Number of molecules 4. Pressure (which is the focus of this section) II. Pressure and Force A. Pressure - force per unit area on a surface 1. Pressure = Force / Area 2. Unit for pressure is newton (N)

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3. 1 newton is the force that will increase the speed of one kilogram of mass by

Unformatted text preview: one meter per second each second it is applied a.On earth, each kilogram exerts 9.8 N of force 4. The same force applied to a smaller area equals greater pressure B. Gas particles exert pressure on any surface they collide 1. A balloon expanding is caused by gas particle collision against the inside of balloon walls 2. Pressure exerted depends on volume, temperature, # of molecules C. Atmosphere 1. Exerts pressure (at sea level is 10.1 N/ cm^2) 2. Atmospheric pressure is sum of the partial pressures of various gases that compose the atmosphere...
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• Fall '08
• Young
• Mole, Force, Van der Waals, real gases, B. Johannes van der Waals

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