Monday, February 14, 2011
Mon-Day 1
We then finished the parallel circuit construction and measurements activity.
AP Chem - we did several permutations of gas-solid equilibrium problems in which we either determined the equilibrium concentrations of reactants and products or we determined the equilibrium constant based on initial conditions and the stoichiometry of the reaction (which we organize all in one ICE table).
We saw the important case in which solids or liquids are added to equilibrium solid-gas mixtures; adding a solid or liquid (not the solvent) changes NOTHING because solids and liquids are not part of any equilibrium constant expression. The ONLY change, of course, is that you have/see more of the unreacted solid that you just added to the container.
We discussed the 3-STEP Le Chatelier method for predicting shifts in systems.
This explains nothing but it is very useful in predicting whether or not a given stress will make more or less of a desired (or undesirable) reactant or product.
We will give the REAL kinetics explanation of HOW stresses CAUSE shifts. Once you know the real deal, Le Chatelier is convenient but superfluous.
# posted by C @ 8:52 PM 
