To accurately determine the equivalence points, we compute the first derivative of the titration curve. This can be done in Logger Pro or with the LabQuest unit.
The first derivative (dotted line) shows maximums when the slope of the curve is steepest, which coincides with the equivalence points of the titration.
Click the button below to view the titration data.
Note: The data set provided below is from a different trial and the numbers may vary slightly from what is shown in the videos.
What is the pH at the equivalence points?
What is the volume of NaOH at the equivalence points?