Thursday, February 12, 2009
Thurs-Day 2
AP Chem- discussed the Le Chatelier shift (or lack thereof) when an inert gas is added to a system at constant T and V (no shift because the partial pressures of any gaseous reactants or products remain the same) as well as adding the inert gas at constant T and P (shift towards the side with more moles of gases).
We then discussed the EXPLANATION of Le Chat's simple rules via kinetic-molecular theory. These problems are much easier when you DRAW a picture of what is occurring in the reaction vessel before AND after the stress is applied; also, putting in effective collision rate numbers that are consistent with your picture leads you to the correct shift prediction.
Keep practicing the problems posted on Blackboard and be sure to go over the notes for the whole unit.
Bio 6-8: reviewed for tomorrow's Immune System Exam.
I've posted more worksheets and practice quizzes so be sure to do them BEFORE you check the answer keys. Any mistakes made in your studying can be corrected before the test tomorrow.
Study efficiently and USE THE TEST SKILLS that I constantly implore you to use (the MOST important of which is to clearly and definitely IDENTIFY and USE the key words from the question!) and you'll do well tomorrow.
We then discussed the EXPLANATION of Le Chat's simple rules via kinetic-molecular theory. These problems are much easier when you DRAW a picture of what is occurring in the reaction vessel before AND after the stress is applied; also, putting in effective collision rate numbers that are consistent with your picture leads you to the correct shift prediction.
Keep practicing the problems posted on Blackboard and be sure to go over the notes for the whole unit.
Bio 6-8: reviewed for tomorrow's Immune System Exam.
I've posted more worksheets and practice quizzes so be sure to do them BEFORE you check the answer keys. Any mistakes made in your studying can be corrected before the test tomorrow.
Study efficiently and USE THE TEST SKILLS that I constantly implore you to use (the MOST important of which is to clearly and definitely IDENTIFY and USE the key words from the question!) and you'll do well tomorrow.
# posted by C @ 2:40 PM 
