Question

A Sulphate salt of Group 2 element of the periodic Table is a white , soft substance, which can be moulded into different shapes by making its dough . When this compound is left in open for some time, it become a solid mass and cannot be used for moulding purposes . Identity the sulphate salt and Why does it show such a behaviour ? Give the reaction involved .​

Answer 1

Answer:

The substance which is used for making different shapes is Plaster of Paris. Its chemical name is calcium sulphate hemihydrate (CaS04. ... The two formula unit of CaS04 share one molecule of water. As a result, it is soft.

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Answer 2

Step-by-step explanation:

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