The Sblock Elements Ques 7
7. $HCl$ was passed through a solution of $CaCl_2$, $MgCl_2$ and $NaCl$. Which of the following compound(s) crystallise(s)?
[2020]
(a) Only $NaCl$
(b) Only $MgCl_2$
(c) $NaCl, MgCl_2$ and $CaCl_2$
(d) Both $MgCl_2$ and $CaCl_2$ are ionic compounds.
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Solution:
- (a) When $HCl$ is passed through the solution $Cl^{-}$ion concentration increases. Hence ionic product becomes more than solubility product. Only $NaCl$ is crystallised due to less solubility than $MgCl_2$ and $CaCl_2$.
BETA
