what is plaster of paris?How is it obtained from gypsum
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It is CaSo4.1/2H2O. This calcium sulphate hemihydrate is prepared by heating the gypsm at 373K. It loses water molecules to form calcium sulphate hemihydtate. CaSo4.2H2O on heating at 373K gives us CaSo4.1/2H2O It us used in fractured bones.
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