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  4. MgCl2 ⋅ 6H2O on heating gives anhydrous MgCl2

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Q. $ MgCl_2 \cdot 6H_2O $ on heating gives anhydrous $ MgCl_2 $

IIT JEEIIT JEE 1982The s-Block Elements

Solution:

Heating $ MgCl_2 \cdot 6H_2O $ brings about partial dehydration as
$ MgCl_2 \cdot 6H_2O \xrightarrow {\Delta} Mg(OHCl) + HCl + 5H_2O $