Plaster of paris on losing water and gaining water gives `A` and `b`.

1.	Plaster of paris on losing water and gaining water gives `A` and `b`. Identify `A` and `B`.
Answer» Plaster fo paris is `CaSO_(4).(1)/(2)H_(2)O` On losing water, it forms `CaSO_(4)` `CaSO_(4).(1)/(2)H_(2)Orarrunderset((A)"Dead burn plaster")(CaSO_(4)+(1)/(2)H_(2)O)` On gaining water, it forms `CaSO_(4).(1)/(2)H_(2)O+(3)/(2)H_(2)Orarrunderset((B) "Gypsum")(CaSO_(4).2H_(2)O)` `(A)` and `(B)` are `CaSO_(4)` and `CaSO_(4).2H_(2)O` respectively.

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Plaster of paris on losing water and gaining water gives `A` and `b`. Identify `A` and `B`.

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