Preparation and Standardization of 0.05 M Magnesium Sulphate

Magnesium Sulphate Solution Preparation

• Dissolve 12.5 g of magnesium sulfate in sufficient water to produce 1000 ml.
• Standardize the solution in the following manner.

Magnesium Sulphate Solution Standardization

• Pipette 30.0 ml of solution into a flask.
• Add 20 ml of water, 10 ml of strong ammonia-ammonium chloride solution and 50 mg of mordant black II Mixture.
• Titrate with 0.1 M disodium edetate until the color changes from violet to full blue.
• 1 ml of 0.1 M disodium edetate is equivalent to 0.02465 g of MgS04.7H2O.

Also see: Determination of Shelf Life of Solutions in Laboratory