Question

Why $MgC{l}_2$ is soluble in water but insouble in acetone, while methane is insoluble in water but soluble in acetone.

Answer 1

$MgC{l}_2$ is an ionic and thus polar compound. So, it dissolves in polar water but insoluble in non – polar acetone.
Whereas, methane being non – polar dissolves in a non – polar acetone and is insoluble in polar water.