Question

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◼️◾◾why do plaster of paris stored in a moisture proof container◾◾◼️
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Answer 1

Answer:

>> POP is always stored in a moisture proof container because If POP comes in contact with the moisture it will eventually turn POP into a hard solid mass which will make it useless.

Answer 2

Explanation:

Plaster of Paris stored in moisture proof container because the presence of moisture can cause slow setting of plaster of Paris by bringing about its hydration. This will make plaster of Paris useless after some time.

Additional information :-

Preparation of plaster of Paris :-

• Plaster of Paris is prepared form Gypsum.
• When Gypsum is heated to a temperature of 100°C, it loses three-forths of its water of crystallisation and form plaster of Paris.

Reaction :-

• CaSO4•2H2O ----100°C--> CaSO4•½H2O + 3/2 H2O

Uses of plaster of Paris :-

• Plaster of Paris is used in hospitals for setting fractured bones.
• Plaster of Paris is used in making toys, decorative materials, cosmetics, etc..
• Plaster of Paris is used as a fire-proofing material.
• Plaster of Paris is used for making surfaces smooth before painting them.