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1. Rinse the burette with distilled water, then with the supplied alkali. Fill the burette with the alkali taking care to ensure that the bottom of the meniscus is on zero and that the jet of the burette is filled completely.
2. Rinse the pipette with distilled water, then with the sulfuric acid. Fill the pipette with the acid, taking care with the pipette filler and ensuring that the bottom of the meniscus is on the ‘line’ of the pipette.
3. Carefully transfer the acid in the pipette into a conical flask, to remove the final drop from the pipette, gently touch the end of the pipette onto the surface of the liquid in the conical flask.
4. Add 3 drops of phenolphthalein indicator to the conical flask and swirl gently to mix.
5. Place the conical flask onto a white tile underneath the burette.
6. Titrate the alkali with the acid, stop adding the alkali when the indicator turns pink and remains pink.
7. Record your ‘rough’ titre value in the results table.
8. Repeat the process with fresh acid and indicator, adding the alkali dropwise with swirling as the end point is reached.
9. Repeat once more, or until 2 titre values are within 0.2 cm³ of each other.
10. Calculate the average titre.

Average titre = _________________cm³