AP Chemistry: Class 28

Dates

• Period E – Monday, March 10th

Titration Quiz

• One question – Three parts – 15 minutes maximum
• Writing reactions necessary
• Strong vs Weak acid knowledge needed
• Ka, Kb, pKA, pKb, Kw, pKw
• titration calculations

Titration Lab Completion Notes

• Be sure and calibrate the sensor with available known pH solutions
• Need two trials of each approach
• Q: how does the indicator work? Hint: it’s a weak acid
• Q: how can you determine the equivalence point using a pH sensor?
• Note – do not use the “easy answer” for these lab questions
• Q: why did you use two methods? are they supposed to give the same answer?

Homework

• Lab Report in LNB due Wednesday
• NOTE – no late LNB work accepted as in the past