Hw1 - CHEM 342 Physical Chemistry I Fall 2010 Problem set 1...

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CHEM 342 Physical Chemistry I Fall 2010 Problem set 1 Due 9/5/2010 (Monday) 1. An automobile tire was inflated to a pressure of 24 lb in -2 (1.00 atm = 14.7 lb in -2 ) on a winter’s day when the temperature was –5 o C. What pressure will be found assuming no leaks have occurred and that the volume is constant, on a subsequent summer’s day when the temperature is 35 o C? What complications should be taken into account in practice? 2. A certain sample of a gas has a volume of 20 L at 0 o C and 1 atm. A plot of the experimental data of its volume against the Celsius temperature, , at constant P, gives a straight line of slope 0.0741 L( o C) -1 . From these data alone (without making use of the perfect gas law), determine the absolute zero of temperature in degrees Celsius. 3. Calculate the molar volume occupied by 1 mole of N 2 using the van der Waals equation in the form of virial expansion at (a) its critical temperature and (b) its Boyle temperature. Assume that the pressure is 10 atm throughout. At what temperature is the
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Hw1 - CHEM 342 Physical Chemistry I Fall 2010 Problem set 1...

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