A white chemical compound becomes hard on mixing proper quantity of water. It is also used in surgery to maintain joints in a fixed position. Name the chemical compound.
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The chemical compound is Plaster of Paris -- calcium sulphate hemihydrated - CaSO4.1/2 H2O
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Plaster of Paris is a white compound which becomes hard on mixing with proper quantity of water.It is used to maintain joints in a fixed position.
It is prepared by a quick setting gypsum plaster consisting of a fine white powder,which hardens when moistened and allowed to dry.Plaster of Paris is prepared by heating CALCIUM SULPHATE DIHYDRATE or GYPSUM,to 120 degree-180 degree.
CaSo4 . 2H2O →373K→ CaSo4 . 1/2H2O+1/2H2O
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