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Preparation and Standardization of 0.1 M Ferrous Ammonium Sulphate


Preparation and standardisation of 0.1 M Ferrous Ammonium Sulphate using Ceric Ammonium Sulphate and Orthophenanthroline solution as indicator that is used in pharmaceutical analysis.

Ferrous Ammonium Sulphate Solution Preparation

•  Dissolve 40 g of ferrous ammonium sulphate 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 sulphate until the red color is changed to pale blue.
•  1 ml of 0.1 M ceric ammonium sulphate is equivalent to 0.03921g of  Fe(NH4)2(SO4)2.6H2O.

Also see: Determination of Shelf Life of Solutions in Laboratory

Ankur Choudhary is India's first professional pharmaceutical blogger, author and founder of Pharmaceutical Guidelines, a widely-read pharmaceutical blog since 2008. Sign-up for the free email updates for your daily dose of pharmaceutical tips.
Email: .moc.enilediugamrahp@ofni Need Help: Ask Question


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