what is plaster of Paris
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plastr of paris is hydrated salt: caso4.1/2h2o
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a soft mixture of sand and cement and sometimes lime with water, for spreading on walls, ceilings, or other structures, to form a smooth hard surface when dried...
- for false ceiling...
- to set fracture bones...
- for making toys...
- material for decoration...
- for making smooth surface of walls...
Plaster of Paris is prepared by heating gypsum to a temperature of 373K. When gypsum is heated to a temperature of 373k ,It loses three-Fourths of its water of crystallisation and forms Plaster of Paris. 1)It is a white powder. 2)It has a very remarkable property of setting into a hard mass on wetting with water...
{heat (373°K)}
{heat (373°K)}CaSO4.2H2O-------->CaSO4.1/2H20 + 1 1/2H20
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