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Question

When hydrated MgCl2.6H2O is strongly heated:

A
MgO is formed
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B
Mg(OH)2 is formed
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C
Mg(OH)Cl is formed
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D
Ahydrous MgCl2 is formed
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Solution

The correct option is A MgO is formed
Magnesium hydrochloride is hygroscopic in nature and it loses its water molecules with the formation of magnesium oxide. When mixed with hydrated magnesium oxide, magnesium chloride forms a hard material called Sorel cement.

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