Question

Plaster of Paris Should be storsed in air tight Moisture
Proof Containers. Why?​

Answer 1

Answer:

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Answer 2

Explanation:

Plaster of paris is calcium sulphate and addition of water of crystallization to it leads to formation of gypsum which becomes hard material. It should be stored in water proof container.

$CaSO_{4} . \frac{1}{2} H_{2} O + \frac{3}{2} H_{2} O = CaSO_{4} .2H_{2} O$