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Lecture 8

CHM139H1 Lecture 8: CHM139 Lecture 8

2 Pages
Fall 2015

Course Code
Kris Quinlan

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On #1, the puck just sits there because the pressure on both sides of the puck are equal On #2, the puck will continue to fall until the pressure of the gas offsets the external pressure and are the same V = k2T As temperature increases, you raise the kinetic energy of the molecules and are moving faster (and hitting each other and the walls more frequently + harder = pressure increasing), so therefore, so does the volume (assumption of the model) 1) P const= Pgas, low T, smaller V: increasing strength and frequency of collisions raises pressure 2) P gas> P const piston will continue to rise until the pressures are equal on both sides 3) P const= Pgas, high T, greater V If you keep pressure constant, you get a linear relationship and the volume of gas converges when the temperature equals ‘absolute zero’. There is a temperature where any states of matter cannot get lower than. The dotted lines are extrapolated because as gases reach a certain temperature, they will liquidfy. 1) P = P , small n, smaller V
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