Which condition did you change?
Labs / Chemistry
pH & Titration
Press and hold Add base to drip titrant into the acid, drop by drop. The pH barely moves at first, then rockets through the equivalence point in a single sharp jump — and your indicator flips colour right as it happens.
Labs / Chemistry / pH & Titration
pH & Titration
Press and hold Add base to drip titrant into the acid, drop by drop. The pH barely moves at first, then rockets through the equivalence point in a single sharp jump — and your indicator flips colour right as it happens.
Why it matters
Why explore this?
Chemistry connects events too small to see with changes we can measure. This model helps you link particles, energy, and conditions to an observable result.
Explore
Try the model
pH 2.88Vb 0.0 mLVeq 25.0 mL
Investigate
Questions to test
Predict first, try it in the model, then use what you observe to answer.
What to try
- Why does the pH crawl slowly for most of the titration, then leap almost straight up near the middle?
- The acid started acidic — so why does the equivalence point land above pH 7 instead of exactly at 7?
- Which indicator flips closest to the true equivalence point, and which one would fool you into stopping too early?
- If you double the acid concentration, does it take twice as much base to reach equivalence? Watch the Veq readout.
- Add base very slowly right near the jump — how few drops separate a pale solution from a fully flipped one?
Explain
Make sense of what happened
Describe what happened at the particle or energy level, then connect it to the result you saw. A strong explanation names both the cause and the evidence.
Check
Before you leave
What happened to the particles or energy?
What observation supports your explanation?
If you can answer all three using evidence from the model, you understand the main idea. If not, return to Explore and change one setting at a time.