SECTIONB
15. What is the chemical formula for plaster of Paris? How is it prepared? State the
common and the chemical names of the compound formed when plaster of
Paris is mixed with water
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Answer:
The name plaster of Paris came from the fact that it was first of all made by heating gypsum which was mainly found in Paris. The compound plaster of Paris is prepared by heating gypsum at 120oC. The chemical formula for the plaster of Paris is (CaSO4) H2O and is better known as calcium sulfate hemihydrate.
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Answer:
The name plaster of Paris came from the fact that it was first of all made by heating gypsum which was mainly found in Paris. The compound plaster of Paris is prepared by heating gypsum at 120oC.
CaSO4.2H2O → CaSO4.1/2H2O + 3/2H2O
The chemical formula for the plaster of Paris is (CaSO4) H2O and is better known as calcium sulfate hemihydrate.
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