Question

Why $LiI$ is more soluble than $KI$ in ethanol?

Answer 1

$LiI$ is more soluble than $KI$ in ethanol because $Li$ has a covalent character because $Li$ ion has high polarizing power due to its small size. Therefore, $LiI$ is soluble in alcohol. On the other hand, $KI$ is predominantly an ionic compound, therefore is insoluble in ethanol.