Sunday, July 9, 2017

2.39: Describe an Experiment to Prepare a Pure, Dry Sample of a Soluble Salt, Starting from an Insoluble Reactant



PREPARATION OF A SOLUBLE SALTS:
s
USING DILUTE ACID AND INSOLUBLE BASE:
s
PREPARATION OF SOLUBLE SALTS - METHOD 1
Diagram showing the Filtration of Mixture to Remove Excess Base
METHOD:

  • Add dilute Acid into a beaker and heat using a bunsen burner flame
  • Add the insoluble base in small amounts and stir until base is in excess (base stops disappearing and a suspension of base forms in acid)
  • Filter mixture into an evaporating basin to remove the excess base
  • Leave the filtrate in a warm place to dry and crystallize
  • Decant excess solution
  • Blot crystals dry

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