Preduct that anhyrous AICI_(3) is covalent form the data given below, ionisation enegry for AI = 51.37 kJ mol^(-1), Delta_(hyd) H for AI^(3+) =- 4665 kJ "mole"^(-1), Delta_(hyd)H for CI^(Theta) =- 381 kJ mol^(-1))

Preduct that anhyrous AICI_(3) is covalent form the data given below,

1.	Preduct that anhyrous AICI_(3) is covalent form the data given below, ionisation enegry for AI = 51.37 kJ mol^(-1), Delta_(hyd) H for AI^(3+) =- 4665 kJ "mole"^(-1), Delta_(hyd)H for CI^(Theta) =- 381 kJ mol^(-1))
Answer» SOLUTION :The total hydration enegry of `AI^(3+)` and `3CI^(Theta)` IONS is `DeltaH_(hyd) ={-4665 +3(-381)} kJ mol^(-1) = - 5808 kJ mol^(-1)` The enegry RELEASED is more than that required for the ionisation of `AI` to `AI^(3+)` (which is `-4665 kJ mol^(-1))` causing ionisation of `AICI_(3)` solution. Thus, the compound `AICI_(3)` BECOMES ionic in aqueous solution.