Question

how is plaater of paris chemically difference from gypsum? how they get converted into each other .​

Answer 1

Answer:

Plaster of Paris is different from Gypsum in term of water of crystallization.Gypsom has 2 mole of water of crystallization where as Plaster of Paris has half mole of water of crystallization.Plaster of Paris is prepared from heating gypsum.CaSO4.2H2O ------Heat/273 k--> CaSO4.1/2 H2OWhen plaster of Paris is mixed with water it get converted into GypsumCaSO4.1/2 H2O + 3/2 H2O ----------> CaSO4.2H2OThe use of plaster of Paris are- i It is used for making moulds or casts for toys pottery ceramics etc. ii In surgical bandages for setting fractured bones.

Explanation:

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