Chem 131 - Chem 131 - 09/28/2009 Equilibrium state o o o...

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Chem 131 - 09/28/2009 Equilibrium state o intensive properties do not change with time o no currents o get to the state from any direction (ie. crystal at low temperature, glass needs to be cool, cannot get there in any direction) Metastable state o look like equilibrium (ie O and H H2O) Equilibrium state depends on constraints : (anything that we fix for our system) (ie. room take out wall change state of room) o change constraints new equilibrium experimental fact - need a small subset of intensive properties to specify state o the intensive properties relate to each other vary system to system (Relations for others vary from system to system Equation of state o it is difficult to determine o for a single component homogeneous (same everywhere) system, use P,T o for a r component homogeneous system, use P, T, X1, X2, X(n-1) Temperature o Temperature is related to kinetic energy o def: to assume there 2 system is separated by a wall that allows energy but no mass flow
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Chem 131 - Chem 131 - 09/28/2009 Equilibrium state o o o...

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