Epsom Salt
(Short Note)
Definition
The hepta hydrate from of magnesium
sulphate is known as Epsom Salt.
Molecular
Formula
The molecular formula of Epsom Salt
is
MgSO4. 7H2O
Occurrence
Magnesium sulphate occurs in nature
as Kleserite (MgSO4.H2O)
Preparation of Epsom Salt
Magnesium sulphate is prepared by the
reaction of sulphuric acids on Magnesium metal, its oxide, hydroxide or
carbonate.
Mg + H2SO4 —-> MgSO4 + H2
MgO + H2SO4 —-> MgSO4 + H2O
Mg(OH)2 + H2SO4 —-> MgSO4 + 2H2O
Mg(OH)2 + H2SO4 —-> MgSO4 + 2H2O
MgCO3 + H2SO4 —-> MgSO4 + H2O +
CO2
Properties of Epsom Salt
1. It is soluble in water
2. Crystalline Epsom loses water on
heating forming anhydrous magnesium sulphate.
Use of Epsom Salt
Epsom salt is used as a mild
purgative.
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