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Grade 11Organic Chemistry

formula for plaster of paris

Profile image of shridhar
11 Years agoGrade 11
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1 Answer

Profile image of Gaurav
11 Years ago
Plaster of Paris is made by heating the gypsum. When gypsum is heated to about 150°C it losses water and produces the powder, plaster of Paris.

Gypsum =heat⇒ Plaster of Paris + steam

2CaSO4·½H2O +3H2O ⇒ 2CaSO4·2H2O + heat

So the formula of plaster of paris is 2CaSo4.½H2O

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