Reading Titration Curves
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Objective
I can interpret a titration curve to determine the equivalence point for strong acids and strong bases.
Part 1 of 4
Warm-up video
Khan Academy Organic Chemistry · 7:10
We don't generate video — this one is by Khan Academy Organic Chemistry on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 4
Key concepts
3 concepts
- 1
An indicator changes color in a specific pH range, and methyl red is an indicator that goes from red to yellow over a pH range of about 4.4 to 6.2.
- 2
For the titration of a weak acid with a strong base, the pH is greater than 7 at the equivalence point, so phenolphthalein would work well as an indicator because it changes in a range of 8 to 10.
- 3
When titrating a weak base with a strong acid, the pH at the equivalence point is less than 7, so methyl red would be a good indicator to use.
Part 3 of 4
Practice
3 questions
What characteristic of a strong acid-strong base titration curve allows for the use of multiple acid-base indicators to determine the equivalence point?
For the titration of a weak base with a strong acid, why is the pH at the equivalence point less than 7?
Part 4 of 4
Exit ticket
Quick comprehension check
“According to the video, what is the pH at the equivalence point when titrating a strong acid with a strong base?”
Sample answer included in the free materials
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