Preparation and Standardization of 0.1 M Ferrous Ammonium Sulphate

Ferrous Ammonium Sulphate Solution Preparation

• Dissolve 40 g of ferrous ammonium sulfate in a previously cooled mixture of 40 ml of sulphuric acid and 200 ml of water.
• Dilute with sufficient freshly boiled and cooled water to produce 1000 ml.
• Standardize the solution in the following manner.

Ferrous Ammonium Sulphate Solution Standardization

• Measure accurately 25.0 ml of the solution into a flask.
• Add 2 drops of Orthophenanthroline solution.
• Titrate with 0.1 M ceric ammonium sulfate until the red color is changed to pale blue.
• 1 ml of 0.1 M ceric ammonium sulfate is equivalent to 0.03921g of Fe(NH4)2(SO4)2.6H2O.

Also see: Determination of Shelf Life of Solutions in Laboratory