sblock Elements 2 Question 18

20. $\mathrm{MgCl}{2} \cdot 6 \mathrm{H}{2} \mathrm{O}$ on heating gives anhydrous $\mathrm{MgCl}_{2}$.

$(1982,1 M)$

Subjective Questions

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Answer:

Correct Answer: 20. $\mathrm{F}$

Solution:

  1. Heating $\mathrm{MgCl}{2} \cdot 6 \mathrm{H}{2} \mathrm{O}$ brings about partial dehydration as

$$ \mathrm{MgCl}{2} \cdot 6 \mathrm{H}{2} \mathrm{O} \stackrel{\Delta}{\longrightarrow} \mathrm{Mg}(\mathrm{OHCl})+\mathrm{HCl}+5 \mathrm{H}_{2} \mathrm{O} $$