Thursday, February 01, 2007
Thursday, Day 1
AP: explained how solid-gas-and/or liquid heterogeneous equilibrium constants are SOLELY determined by the partial pressures of any gases in the equilibrium expression and that, even if you add tons more of the solids or liquid, there will be NO EFFECT on the equilibrium concentrations/partial pressures of the gases because the solids and liquids cannot change in CONCENTRATION, no matter what their amounts.
We manipulated equilibrium constants by halving or doubling or tripling the coefficients in a given reaction to see that the equilibrium constants would be taken to the half, second, or third power, respectively.
We also showed that, when two or more equations are added together, the net equation's equilibrium constant is the PRODUCT of the equilibrium constants of the added reactions.
Tomorrow, we begin a technique for solving equilibrium problems that we will use every day for the rest of the year.
Next week, I would like to start AP review using our "5 Steps to a 5'' books. I'd like a vote in class tomorrow to designate a day or days on which we can hold these review session.
Regents: Long test today but the average was an 83, so we are back in business. Intermolecular attraction/ Bonding is a big topic on the Regents so it is important that you do reasonably well on this test. I didn't see any real disasters and there were some middle to high 90 grades, so that is a good sign. Still, the day that I start to see better extra help attendance is the day that the class average will go into the 90s.
Honors: we reviewed the magic triangle and did some mass to mole to particle problems. We even did a formula unit to ion problem that involve one more simple step.
We moved on to percent composition, which we will continue tomorrow. Over the weekend, there will be some worksheets and text reading on all of the problem types that we have covered.
We manipulated equilibrium constants by halving or doubling or tripling the coefficients in a given reaction to see that the equilibrium constants would be taken to the half, second, or third power, respectively.
We also showed that, when two or more equations are added together, the net equation's equilibrium constant is the PRODUCT of the equilibrium constants of the added reactions.
Tomorrow, we begin a technique for solving equilibrium problems that we will use every day for the rest of the year.
Next week, I would like to start AP review using our "5 Steps to a 5'' books. I'd like a vote in class tomorrow to designate a day or days on which we can hold these review session.
Regents: Long test today but the average was an 83, so we are back in business. Intermolecular attraction/ Bonding is a big topic on the Regents so it is important that you do reasonably well on this test. I didn't see any real disasters and there were some middle to high 90 grades, so that is a good sign. Still, the day that I start to see better extra help attendance is the day that the class average will go into the 90s.
Honors: we reviewed the magic triangle and did some mass to mole to particle problems. We even did a formula unit to ion problem that involve one more simple step.
We moved on to percent composition, which we will continue tomorrow. Over the weekend, there will be some worksheets and text reading on all of the problem types that we have covered.
# posted by C @ 6:24 PM 
