Questions
At what temperature is gypsum heated to make Plaster of Paris?
detailed solution
Correct option is C
On heating gypsum at 373 K, gypsum loses water molecules and becomes a calcium sulphate hemihydrate. This is called Plaster of Paris. Its chemical formula is CaSO4·1/2H2O. It is used by doctors as a plaster for supporting fractured bones in the right position.
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