Challenge: hit the pH
Challenge: hit the pH is an interactive experiment in pH & Titration, a free simulation from StudyFi Lab that runs right in your browser.
The beaker holds 50 mL of dilute acetic acid (pH about 3.2). Use drops of NaOH and acid to reach the target pH within ± 0.2. Acetic acid and acetate form a buffer, so around pH 4–6 the pH moves slowly; near the equivalence point a single drop makes a big jump.
Try this: Start with large drops and watch how fast the pH changes. Switch to small drops before the equivalence point.
Frequently asked questions
What does the “Challenge: hit the pH” experiment show?
The beaker holds 50 mL of dilute acetic acid (pH about 3.2). Use drops of NaOH and acid to reach the target pH within ± 0.2. Acetic acid and acetate form a buffer, so around pH 4–6 the pH moves slowly; near the equivalence point a single drop makes a big jump.
How do I try “Challenge: hit the pH”?
Start with large drops and watch how fast the pH changes. Switch to small drops before the equivalence point.
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