4.9 describe experiments to carry out acid-alkali titrations.

  1. Fill a burette with acid
  2. Fill 25cm^3 glass pipette with alkali and put that alkali substance in a conical flask
  3. Add 3 drops of indicator to the flask, and use an indicator with only 2 colours eg. methyl orange or phenolphthalein. WHY? So the colour change between acid and alkali is instant – visual cue. You should also make sure you use a white tile so you can see the colour change better
  4. Add acid to alkali, making sure that the flask is swirled.
  5. Stop when colour change occurs

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