A) \[MgC{{l}_{2}}\]
B) \[MgO\]
C) \[MgC{{l}_{2}}.2{{H}_{2}}O\]
D) \[MgC{{l}_{2}}.4{{H}_{2}}O\]
Correct Answer: B
Solution :
Key Idea: On strong heating, \[MgC{{l}_{2}}.6{{H}_{2}}O\]is hydrolyzed by its own water of crystallization \[MgC{{l}_{2}}.6{{H}_{2}}O\xrightarrow{\Delta }MgO+23HCl+2{{H}_{2}}O\]
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