AP Chemistry – Class 18

Lab 3 – Acid/Base Titration

Dates

• Periods E & F – Thursday, October 4th

Lab Hints

• You will be counting drops of solution as the X-axis and measuring pH on the Y-axis of your graph.
• You should complete a full titration curve so that you can see the inflection point.
• The end point (equivalence point) is NOT NECESSARILY at a pH of 7, rather it is at the inflection point of the generated graph.
• Find the volume (drops) at the inflection point by counting drops until then and then converting drops to volume.
• Suggested data: initial and final volumes of both solutions, drops to equivalence point
• Multiple trials are possible and expected

Homework

• Complete lab calculations by next class (in LNB)