Question

Aluminium fluoride is almost completely insoluble in cold water, but aluminium

chloride dissolves to give a clear solution. The addition of aqueous sodium hydroxide to

this solution produces a white precipitate which dissolves in an excess of aqueous

sodium hydroxide forming another clear solution.

(i) What enthalpy factors are involved in process of dissolving an ionic salt in water? Use

these factors to suggest a reason why AlF3, is so insoluble.

(ii) Suggest equations for the formation of the white precipitate and for its dissolving in

an excess of aqueous sodium hydroxide.​

Answer 1

Answer:

sodium hydroxide of the precipitqte