How is Plaster of Paris prepared? What reaction takes place when it se – InterviewSolution

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1.	How is Plaster of Paris prepared? What reaction takes place when it sets to a hard mass?
Answer» Solution :Plaster of PARIS is prepared by HEATING gypsum to a temperature of `100^@C` . The following reaction takes place ` CaSO_4. 2H_2O OVERSET(100^@C)(to) CaSO_(4) 1/2H_2O+ 1(1)/(2) H_2O` : On mixing with water, it REACT to a hard mass to form gypsum again i.e, the reverse reaction takes place.

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