sblock Elements 2 Question 18
20. $\mathrm{MgCl} _{2} \cdot 6 \mathrm{H} _{2} \mathrm{O}$ on heating gives anhydrous $\mathrm{MgCl} _{2}$.
$(1982,1 M)$
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Answer:
Correct Answer: 20. $\mathrm{F}$
Solution:
- Heating $\mathrm{MgCl} _{2} \cdot 6 \mathrm{H} _{2} \mathrm{O}$ brings about partial dehydration as
$$ \mathrm{MgCl} _{2} \cdot 6 \mathrm{H} _{2} \mathrm{O} \stackrel{\Delta}{\longrightarrow} \mathrm{Mg}(\mathrm{OHCl})+\mathrm{HCl}+5 \mathrm{H} _{2} \mathrm{O} $$
