A) Only \[NaCl\]
B) Only \[MgC{{l}_{2}}\]
C) \[NaCl,\text{ }MgC{{l}_{2}}\] and \[CaC{{l}_{2}}\]
D) Both \[MgC{{l}_{2}}\] and \[CaC{{l}_{2}}\]
Correct Answer: A
Solution :
[a] Since \[CaC{{l}_{2}}\] and \[MgC{{l}_{2}}\] are more soluble than\[NaCl\], on passing HCl(g) through a solution containing \[CaC{{l}_{2}},\text{ }MgC{{l}_{2}}\] and \[NaCl\] then \[NaCl\] crystallizes out.
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