ACID BASE TITRATION

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Titration of Acids TUTORIAL
Basics of Titration TUTORIAL

Acid Titration Video(206 MB)
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Acid Titration Prelab

OVERVIEW of the EXPERIMENT

  1. STANDARDIZATION of the NaOH Solution
    • weigh out "KHP" standard.
    • Titrate to phenolphthalein end-point.
    • Molarities of the NaOH obtained from Duplicate titrations should agree to within 1%.
    • Calculate the average Molarity of the NaOH solution.
  2. Determining the w/v% Acetic Acid in Vinegar
    • Pipet out 5.00 mL of the vinegar solution,
    • Titrate to the phenolphthalein end-point with the standardized NaOH solution.
    • Duplicate titrations should agree to within 0.10 mL.
    • Use your Average Molarity of the NaOH and the titration data to calculate the w/v% of acetic acid in your Vinegar UNKNOWN.
  3. Determining the Ascorbic Acid content of a Vitamin C tablet
    • Weigh the tablet on an Analytical Balance.
    • Soak the tablet in your titration flaskto soften.
    • Break up the tablet with a stirring rod.
    • Titrate with your standard NaOH solution to the phenolphthalein end-point.
    • Calculate the mg of Ascorbic Acid in your tablet.

REMEMBER
This analysis is a chain of steps.
An
error in any step will produce an error in the final result.

RWK 1997