A) \[\text{CaC}{{\text{l}}_{\text{2}}}\] dissolves in it
B) it is not good dehydrating agent
C) it forms as solid \[CaC{{l}_{2}}.4\text{ }C{{H}_{3}}OH\]
D) it reacts with \[C{{H}_{3}}OH\]
Correct Answer: C
Solution :
Methanol cannot dried with anhydrous \[\text{CaC}{{\text{l}}_{\text{2}}}\] because it forms a solid \[CaC{{l}_{2}}.4C{{H}_{3}}OH\] (addition compound).
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