5.60_PS_1_fall_2008

5.60_PS_1_fall_2008 - MASSACHUSETTS INSTITUTE OF TECHNOLOGY...

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Sheet1 Page 1 MASSACHUSETTS INSTITUTE OF TECHNOLOGY Department of Chemistry (text) 5.60 Physical Chemistry (Rectangle comment Poul Petersen 09/04/08 06:12 PM blank) Spring 2008 Problem Set #1 Due: (Cross-Out comment Poul Petersen 09/04/08 06:10 PM blank) 02/15/08 Readings: Silbey Alberty Bawendi (SAB), Chapter 1, Chapter 2.1-2.8 1.1 Calculate the pressure in bar according to the (a) ideal gas law (b) van der Waals equation. The van der Waals constants for H2 are a = 0.2476 L2 bar mol-2 and b = 0.02661 L mol-1. Assuming that the van der Waals equation gives the right answer, what is the percent error in using the ideal gas law? 1.2 Nitrogen tetroxide is partially dissociated in the gas phase according to the reaction N2O4 (g) = 2NO2(g) A mass of 1.588 g of N2O4 is placed in a 500 cm3 glass vessel at 298 K and dissociates to an equilibrium mixture at 1.0133 bar. (a) What are the mole fractions of N2O4 and NO2?
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5.60_PS_1_fall_2008 - MASSACHUSETTS INSTITUTE OF TECHNOLOGY...

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