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Acid-Base Titration

Perform a precise titration to determine unknown concentration of a solution

Acid–Base Titration Pair

pH Value14.00
Volume Added0.00cm³
Burette (Titrant)
Conical Flask (Analyte)

Titration Curve

↔️ Drag green dot to scrub🖱️ Click curve intersection
pHAdded Titrant
Current

Experiment Settings

1. Conical Flask (Analyte)

Unknown Concentration Solution

Strong Base Volume (NaOH)25 cm³

2. Burette (Titrant)

Strong Acid Concentration (HCl)1 M
Strong Acid Volume (HCl)50 cm³

3. Indicator

  1. 1Rinse the glasswares, fill the burette, and record the initial reading.
  2. 2Pipette the analyte into a conical flask and add a few drops of indicator.
  3. 3Add the standard solution slowly from the burette, swirling the flask constantly.
  4. 4Stop when the indicator permanently changes color (end point).
  5. 5Record the final burette reading and calculate the unknown concentration.
HKDSE Tip
🧪 Apparatus Setup
  • Burette: Holds the standard solution (known concentration).
  • Conical Flask: Holds the analyte (unknown concentration), measured precisely with a pipette.
  • White Tile: Place it under the conical flask to see the indicator color change clearly at the end point.
⚠️ Practical Operations
  • Air Bubbles: Must expel air bubbles from the burette tip before titration to avoid inaccurate volume readings.
  • Swirling: Swirl the flask constantly during titration to ensure thorough mixing.
  • Rinsing (DSE Classic): Rinse burette & pipette with their respective solutions; rinse conical flask with distilled water only.
💡 Checkpoint
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