Wednesday, March 30, 2011
Wednes-Day 2
Physics - we reviewed for the Waves 2 exam, going over multiple choice packet questions. Many review problems and practice tests are on Blackboard for your perusal as study aids.
AP Chem - we determined that Ksp's can not be compared as measures of molar solubility between salts that have different empirical formulas.
We then quantitatively and qualitatively looked at the kinetics and Le Chat shift of an insoluble salt in a solution that contains an ion in common with the salt. We saw how the molar solubility of an insoluble salt is further depressed via collisions/reactions of its dissolved ions with the common counter-ion that is in solution.
We then looked at how to determine whether or not a precipitate would form by mixing solutions containing ions that form insoluble salts, and comparing the Qsp value from their concentrations AFTER mixing to the Ksp value (we have done so in earlier equilibrium units).
We the began the process of quantitatively determining whether "complete" (99% or more) precipitation is occuring, if a precipitate does indeed form.# posted by C @ 10:44 PM 
