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Titration Procedures


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