EXPT 8:
Equivalent Weight of an Unknown Acid

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Experiment 8 - Equivalent Weight of an Unknown Acid

Procedure:

Part A - Preparation of the Standard Acid Solution

  1. Use the analytical balance to measure 3.0000 - 3.2000 grams of the unknown acid. Record the
    exact sample mass on the data sheet.
  2. Transfer the acid very carefully from the weighing boat into a 250 mL beaker.
  3. Dissolve the acid in about 150 mL of distilled water. (Stir gently if necessary to speed up the rate of dissolving.)
  4. Transfer the acid into a 250.0 mL volumetric flask.
  5. Fill the flask close to the mark with distilled water.  Use a Pasteur pipet to add the last few drops to the mark, stopper and mix by inverting the flask.

 



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