AP Chemistry · Acids and Bases
Virtual Titration Simulator
Choose an analyte, a titrant and an indicator. Open the stopcock, watch the pH curve grow, and find the equivalence point and the pKa from your own data.
2. Titrate
The bench
- pH
- Titrant added
- Burette reading
- Solution color
Stopcock
3. Watch the curve
pH curve
Go drop by drop near the steep part to see it clearly. The shaded band is where the indicator changes color.
4. Analyze
Find the key points
The endpoint
When the indicator changes color and the color stays, record the endpoint.
No endpoint recorded yet.
From your curve
5. Make sense of it
What does the curve tell you?
Try a strong acid, then a weak acid, with the same base. Then switch indicators and record the endpoint again.
Why is the curve steepest at the equivalence point? Why does the pH at the half-equivalence point equal the pKa? Which indicator worked, and why?
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