Monday: We started with a review of pH and pOH calculations and where it comes from (Self-Ionization of water). Then we did the chemactivity on definitions of acids and bases. Note to self- PLEASE remember to change the definitions for arrhenius! They are confusing! Anyway, once nearly everyone made it through the identification of conjugate acids/bases we moved on to distinguish strong acids from weak. A couple volunteers (Maddy and Amanda) measured the pH of a 1.0 M HCl and a 1.0 M HC2H3O2. The predicted pH was 0, but only for HCl was it 0. HC2H3O2 was greater than 0 indicating that it didn’t make as much H+ as it was supposed to…. this led into notes about strong vs. weak acids. We ended w/ organic acids and amines definitions and symbols. Notes.
Tuesday: Scary snow day. We had a somewhat shortened class with only 3 students absent, but went ahead anyway. We did pg 11-15 in the packet. Homework is to get through page 15. Page 16 is entirely optional. It’s just extra practice of some calculations we did on Monday.
Homework: Watch pH to pKa video here.
Wednesday: Short day b/c of a 2 hr delay. We did some review (pg 9 and 10 of packet). Then you had time to practice pKa calculations. Some of you watched the video b/c you had not yet done the hw.
Thursday: Super short b/c of 2 hr delay. So class was only 30 min. We did this list of review questions.
Friday: Full class! Woo-hoo! I introduced the pKa lab and then you completed it.