Oregon State Univ. Chem Exam I - Solutions to Ideal Gas & Thermodynamics Problems, Exams of Physical Chemistry

Download Oregon State Univ. Chem Exam I - Solutions to Ideal Gas & Thermodynamics Problems and more Exams Physical Chemistry in PDF only on Docsity! Oregon State University Department of Chemistry Chemistry 440 Hour exam I 17 October 2007 R = 1 bar = 1 L = AU = H = 8 J / ( K . mol) 2i 0.08 L . atm/(K . rnol) lo5 Pa rn3 1 dV I (z). P2V; adiabatic process y = Cp/C, 1. (10 pts) One mole of gas occupies a cubic box with an edge length of 1 m. The gas is at its Boyle temperature (250 K). What is the pressure in units of bar? Bd/le M ~ W K 82C~J=o 4 d ~ 2. (20 pts) One mole of an ideal gas is compressed isothermally at 300K from 20 L to 10 L (a) reversibly, and (b) at a constant external pressure equal to the final pressure of the gas. Calculate AU, A(PV) and q b , in units of J for both processes. Label answers clearly as AU, = . . ., etc.