We conducted an experiment to find Ksp of calcium hydroxide.  The instructions and rubric are on the unit 4 page of this site.  Each person is to hand the report in on Tuesday.

Although a product of a double displacement reaction may form a precipitate according to the solubility table, concentrations of the ions may be low enough that no precipitate actually forms.  Refer to p.487-490 in the text for help. 
The unit test will be next Wed., May 19, 2010.
Homework:  p.489 #5, 6; p.493 #10
Review for test:  p.493 #11;  p.522 #1-3, 5, 9, 10-18;  p.523-5 #5, 10, 13, 14, 15ac, 16-18;  p.640 #19

A special kind of equilibrium constant is used when an ionic compound dissolves in water by dissociation.  The text reference is p.482486.
Homework:  Read p.482-483 and answer p.486 #2-4

If you get a cubic equation to solve from an ICE table problem in which K is very small, then you make assumptions to simplify the equation.  Read the examples in the text on p.472-475.
Homework:  p.476 #7, 8; p.481 #4

Given initial concentrations and the K value, you can calculate equilibrium concentrations of substances in an equilibrium system.  Refer to the examples in the text on p.469-470 and p.476-478 on how to use an ICE table.
Homework:  p.481 #2, 5, 6, 7

At equilibrium, the concentrations of reactants and products are related in a mathematical formula that produces a constant value.  Consult the text, p.439-448 and p.463-464.
Homework:  p.445 #5, 6; p.449 #3, 4, 8, 9; p.465 #1, 2

We explained the results of yesterday's experiment in groups by using Le Chatelier's Principle and posted them on the wall. 
Homework:  Lab Exercise 7.2.1 on p.514 in the text

We performed the experiment "Testing Le Chatelier's Principle" from p.514-517 in the text. 
Homework:  p.459 #2, 3, 5, 6, 8a, 10

Fritz Haber applied Le Chatelier's Principle to develop a process to make ammonia.  The text reference is p.461-462.
Homework:  Use p.515 and Table 2 on p.517 to make predictions for each part of the experiment "Testing Le Chatelier's Principle" by writing down the eqbm. eqn., with the colour of reactant or product underneath.  Then state the result of each change on the equilibrium:  will the shift be toward reactants or products, and what colour change will occur?

Read the text p.450-456.  Answer p.457 #1, 2, 4-7.