Monday: Teacher work day/end of quarter (last week was off b/c of snowzilla).
Tuesday: Titration curve analysis. I gave some notes and then had you make titration curves on big paper showing calculations for 4 different points.
Wednesday: Finish titration curve analysis – talked about buffering region and location of equivalence point for weak acid and weak base titrations. Second half of class I did the indicator demo with blue food coloring. Then gave notes on indicators – the gist is that you need to pick and indicator that has a color change at the same pH as the equivalence point and you can do that by making the pKa of the indicator match the pH of the equivalence point +/- 1. Then we did the indicator lab where we used all of your buffers to see at which pH indicators would change color.
Thursday: Review for acids/base test part 2. Worked on multiple choice questions, textbook problems and drawing pics for titration curve. Here’s Bobby’s with some edits by me. Here is the video I made for you on titration problems.