Recently we have been covering some complex topics in class. It is imperative that you read through chapter 8 and chapter 9 to develop an understanding of what is going on, particularly Chapter 9. You will need to know all the VSEPR shapes for both the electron domain and molecular geometry and if you are taking Chem 122 molecular shapes will be part of the course right from the beginning.
Hopefully as you go through the lab this week you will start to visualize how orbitals overlap to form bonds. I hope this lab also serves as a way to visualize the shapes better and develop an understanding of chemical bonding. You will definitely need it for the final.
After finishing the molecular orbital theory portion of lecture I began Chapter 5, which is definitely a change of pace, but it should be much more straight forward than Chapter 8/9 and that is why we moved it to the end of the quarter.
Chapter 5 covers Thermochemistry. We discussed calorimetry in class on Monday and we will continue on Wed by discussing how to calculate enthalpy. The main things we will focus on are: Calc the enthalpy of a rxn, Hess' Law, bond enthalpies, rxn stoich, and standard enthalpy of formation.
Tuesday, December 1, 2009
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