A sulphate salt which is white soft substance is used in making toys. When this compound is left in open for sometime, it becomes a solid mass which cannot be used for molding purposes. Identify the salt, why does its how such a behavior? Give the reaction involved.
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Explanation:
Calcium sulphate is a white soft substance. It is known as Plaster of Paris, which can be moulded into different shapes by making its dough. When Plaster of Paris is left for some time in open, it turns into solid mass because of reaction with moisture present in the atmosphere.
reaction involeved is
Caso4.1/2H2O+1 1/2H2O⇒ Caso4.H2o
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