University College - Chemistry Chem 112A Study Guide - Quiz Guide: Endothermic Process, Partial Pressure, Ideal Gas Law
14 Aug 2018
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Pressure, volume, number (moles), . 08206, temp (k) Law of mass action: kc/p = ccdd / bbaa. Used for concentration or pressure of gas molecules in equilibrium. M = kg (must convert from g/mol to just kg (use avo #) = 8kbt/ m average speed vrms = 3kbt/m = 3rt/m root mean square speed. (per mole) = 3/2 rt average kinetic energy. At a constant m: high temp has a broader and lower peak, lower temp = shorter and higher peak. At constant temperature: high molecular weight = shorter + higher peak, low molecular weight = broader + lower peak. Vmp < < vrms: order on a graph of velocity as x-axis. Equilibrium: no macroscopic change, forward rate = reverse rate, approached from either direction, reached spontaneously. Law of mass action: aa + bb cc + dd: activities of the gas molecules, kc/p = ccdd / bbaa.
