Lecture #6, Monday, October 4th

Today we nearly completed the solubility unit of the course by wrapping up complex ion formation and amphoterism. Using the examples covered in class you should be able to perform problems 34-46 from the Carmen homework set. Be sure to do these problems over and over and over again, until you have a firm grasp of the underlying concepts in each of these problems.

Now that we have discussed all the effects of solubility, questions 47-55 can be answered. In each of these problems be sure to start by writing out the equilibrium expression and decide what effect each reagent has on the concentrations of the ions in solution. By changing the concentration of either ion in solution, the solubility will change. Be sure to keep in mind complex ion formation and amphoteric effects. A complex ion will form if there is a reported K_f value associated with the transition metal cation and its ligands.

At the end of lecture I discussed the Group II/Group III separation and we will discuss the solubility of metal sulfides and the Group III separations on Wed. Be sure you read through your lab manual to get a more in depth analysis of all the reactions that occur in aqueous solution in the qualitative analysis scheme.

Inspiration Quote of the Day:
"Most all good things come through adversity.

Looking back it seems to me,
All the grief that had to be
Left me when the pain was o’er
Stronger than I was before.
- Unknown

We get stronger when we test ourselves. Adversity can make us better. We must challenge to improve, and adversity is the challenger."

Songs Played Before Class
blink-182 - Man Overboard
Journey - Don't Stop Believing

Kappa Dog Night Information
Kappa Dog Night is semi-annual fundraiser hosted by the women of Kappa Kappa Gamma. Between the hours of 12:00am and 3:00am we invite fellow students to join us in raising money for Kappa Kidney Camp, a juvenile camp for those affected by kidney disease. Hot dogs and soda will be sold for $1.50. There will be a HOT DOG EATING contest again this year. It is $10 to participate and the person to eat the most hot dogs in 2 minutes will be named this year's "Kappa Dog Man"! The contest will take place at 1:30am, so come out and cheer on the contestants! We look forward to seeing you all on Thursday!