Question

anhydrous alcl3 is covalent but hydrated alcl3 is ionic why

Answer 1

therefore it prefers to form covalent bonds with Cl atoms... However when AlCl3 is dissolved in water it undergoes hydration releasing a lot of energy.. This energy is enough to remove 3e- from Al atom.. Thus , hexahydrated aluminium chloride is ionic in nature..

Answer 2

anhydrous alcl3 do not have free ions thus cannot conduct electricity whereas hydrated alcl3 ions gets sperated when made hydrated and conducts electricity