Titration Procedures

- Standardization of the Solution of a Base
- Obtain a burette and rinse with 10ml of Sodium Hydroxide solution to standardize burette. Fill the burette with the NaOH.
- Record the liquid level of the burette to the nearest 0.1ml by reading the bottom of the miniscus.
- Titration of an Unknown Acid
- Obtain 0.7g of solid acid (KOH) to the accuracy of ± 0.01g.
- Place KOH in clean earlynmeyer flask with approx 50ml deionized water(A).
- Add 3-4 drops phenolphthalein
- Slowly add NaOH to the KOH solution via the burette. The solution (B) will show pink when the reaction begins to occour.
- The reaction is complete when 1 drop of NaOH causes the KOH solution to completely turn and stay a light pink (C).
- Record the liquid level of the burette to the nearest 0.1ml by reading the bottom of the miniscus.
- Dispose of the solution, and return excess NaOH to your teacher/guardian.
- If solution is dark pink, repeat above procedures.