Question

how is plaster of pairs chemically different from gypsum? How may these be inter converted ? write use of pairs of plaster​

Answer 1

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Answer 2

Answer:

Plaster of Paris is calcium sulphate hemihydrate (CaSO4. V2H2O) while gypsum is calcium sulphate dihydrate (CaSO4.  Gypsum, when heated at a temperature of about 380K, changes to Plaster of Paris. Plaster of Paris, when mixed with water, changes into hard mass called gypsum.