Titration calculations, step by step

A titration is a game of "just enough". You add one solution drop by drop to a measured volume of another until the reaction is exactly complete. One drop too far and you've overshot.

The point where the indicator just changes colour is the end-point. The volume added from the burette is the titre.

1. Pipette a fixed volume (usually 25.0 cm³) of one solution into a conical flask, and add a few drops of indicator.
2. Run the other solution in from a burette until the indicator just changes colour. Swirl constantly; go dropwise near the end.
3. Titre = final burette reading − initial reading. Burettes are read to the nearest 0.05 cm³, recorded to 2 decimal places.
4. Do a quick rough titration first, then repeat accurately until you have concordant titres: titres within 0.10 cm³ of each other.
5. The mean titre uses the concordant titres only. The rough one never makes the cut.