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how plaster of paris is prepared?What is its chemical formula and chemical name?

Plaster of Paris is prepared by heating gypsum [which is chemically calcium sulphate dihydrate (CaSO4.2H2O)] at 373 K. On heating at 373 K, gypsum loses water molecules and becomes Plaster of Paris, which has the chemical name calcium sulphate hemihydrate. Its chemical formula is CaSO4.1/2H2O.  Following is the chemical equation for the reaction

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Ans: Calcium sulphate hemi hydrated is commonly known as "plaster of Paris". Chemical formula: CaSO4.1/2H2O
Plaster of Paris is prepared by gypsum.
Preparation
  
When gypsum is heated up to 1000C ,it loses some molecules of water of crystallization and forms an amorphous white solid known as plaster of Paris.
2CaSO4·½H2O + 3H2O
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Ans: Calcium sulphate hemi hydrated is commonly known as "plaster of Paris".Chemical formula: CaSO4.1/2H2O 
Plaster of Paris is prepared by gypsum.
Preparation
 
When gypsum is heated up to 1000C ,it loses some molecules of water of crystallization and forms an amorphous white solid known as plaster of Paris.
 

2CaSO4� �H2O + 3H2O

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