preperation of magnesium sutfate
EXPERIMENT 4
Title: Preparation of magnesium sulphate.
Date:11.02.2010
Aim: To prepare magnesium sulphate
Theory:
Magnesium sulfate (or magnesium sulphate) is a chemical compound containing magnesium, sulfur and oxygen, with the formula MgSO4. In its hydrated form the pH is 6.0 (5.5 to 6.5). It is often encountered as the heptahydrate, MgSO4·7H2O, commonly called Epsom salt. Anhydrous magnesium sulfate is used as a drying agent. Since the anhydrous form is hygroscopic (readily absorbs water from the air) and is therefore difficult to weigh accurately, the hydrate is often preferred when preparing solutions, for example in medical preparations. Epsom salt has been traditionally used as a component of bath salts.
Procedure:
1.to the 21.08 g of the magnesium carbonate in the 250ml beaker , 50ml of hot water added to beaker to dissolve. Stirred well to dissolve the substance.
2.Hot dilute sulphuric acid added after few minute, then stirred. The mixture allow to cool. Magnesium sulphate crystallizes out. The crystal filter with filter paper, then dried.
Result:
Amount of magnesium sulphate produced- 58g -8.83g= 49.17g
Appereance of magnesium sulphate- white powder
Conclusion:
Magnesium sulphate was prepared successfully. Appearance of Magnesium sulphate is white powder. The amount of Magnesium sulphate produced is 49.17g.
Discussion:
1.How will you identify , your resulting compound as magnesium sulphate?
Solubility test -Freely soluble in water, very soluble in boiling water, and sparingly soluble in ethanol.
Test for Magnesium Solutions of magnesium salts in the presence of ammonium chloride yield no more than a slightly hazy precipitate when neutralized with ammonium carbonate TS,but on the subsequent addition of dibasic sodium phosphate TS,a white,crystalline precipitate,which is insoluble in 6Nammonium hydroxide,is formed.
Test for Sulfate
With barium chloride TS,solutions of sulfates yield a white precipitate that is
Title: Preparation of magnesium sulphate.
Date:11.02.2010
Aim: To prepare magnesium sulphate
Theory:
Magnesium sulfate (or magnesium sulphate) is a chemical compound containing magnesium, sulfur and oxygen, with the formula MgSO4. In its hydrated form the pH is 6.0 (5.5 to 6.5). It is often encountered as the heptahydrate, MgSO4·7H2O, commonly called Epsom salt. Anhydrous magnesium sulfate is used as a drying agent. Since the anhydrous form is hygroscopic (readily absorbs water from the air) and is therefore difficult to weigh accurately, the hydrate is often preferred when preparing solutions, for example in medical preparations. Epsom salt has been traditionally used as a component of bath salts.
Procedure:
1.to the 21.08 g of the magnesium carbonate in the 250ml beaker , 50ml of hot water added to beaker to dissolve. Stirred well to dissolve the substance.
2.Hot dilute sulphuric acid added after few minute, then stirred. The mixture allow to cool. Magnesium sulphate crystallizes out. The crystal filter with filter paper, then dried.
Result:
Amount of magnesium sulphate produced- 58g -8.83g= 49.17g
Appereance of magnesium sulphate- white powder
Conclusion:
Magnesium sulphate was prepared successfully. Appearance of Magnesium sulphate is white powder. The amount of Magnesium sulphate produced is 49.17g.
Discussion:
1.How will you identify , your resulting compound as magnesium sulphate?
Solubility test -Freely soluble in water, very soluble in boiling water, and sparingly soluble in ethanol.
Test for Magnesium Solutions of magnesium salts in the presence of ammonium chloride yield no more than a slightly hazy precipitate when neutralized with ammonium carbonate TS,but on the subsequent addition of dibasic sodium phosphate TS,a white,crystalline precipitate,which is insoluble in 6Nammonium hydroxide,is formed.
Test for Sulfate
With barium chloride TS,solutions of sulfates yield a white precipitate that is
References: 1.science.jrank.org/.../Magnesium-Sulfate-Physical-chemical-properties-magnesium-sulfate. 2.www.buzzle.com/articles/uses-of-magnesium-sulfate 3.en.wikipedia.org/wiki/Magnesium_sulfate