🧪
Acids & Bases Lab
Part 1: Add drops of various acids & bases to a well plate, then test with indicators to observe pH.
Part 2: Mix HCl and NaOH in a neutralization reaction and watch pH change to 7 as salt and water form.
Step 1 — Select a substance to add to the well plate
Step 2 — Select an indicator (or pH probe) and click a filled well
Click a well to see its contents, or select a substance above and click an empty well to add it.
pH Scale Reference
0 Strong Acid7 Neutral14 Strong Base
HCl (0.1 M)
NaOH (0.1 M) — 50 mL
Vol: 50 mL | HCl added: 0 mL
Add HCl to NaOH Beaker
HCl added: 0.0 mL | pH: 13.0 | Equivalence at 50 mL
Indicator in beaker:
Neutralization Reaction
HCl(aq) + NaOH(aq) → NaCl(aq) + H₂O(l)
Net ionic: H⁺(aq) + OH⁻(aq) → H₂O(l)
Spectator ions Na⁺ and Cl⁻ remain in solution as dissolved salt (NaCl).
pH METER
13.00
Basic (NaOH excess)
0 Acid714 Base
Reaction Progress
NaCl formed
0.000 mmol
H₂O formed
0.000 mmol
NaOH remaining
5.000 mmol
HCl excess
0.000 mmol
⬆ Excess NaOH — basic solution