Potassium chloridehas solubility of 32 g at room temperature in water. However its solubility decreases to 2.4 g in alcohol at the same temperature . It becomes completely insoluble in benzene . How do you account for this variation ?

Potassium chloridehas solubility of 32 g at room temperature in water.

1.	Potassium chloridehas solubility of 32 g at room temperature in water. However its solubility decreases to 2.4 g in alcohol at the same temperature . It becomes completely insoluble in benzene . How do you account for this variation ?
Answer» Solution :Water has high DIELECTRIC constant . KCl being IONIC compound is highly soluble in water. Alcohol has a lower dielectric constant. Hence solubility of KCl in alcohol is less. Benzene has still lower value of dielectric constant . Therefore KCl becomes COMPLETELY insoluble in benzene.