AlF_(3) soluble in HF only in presence of KF. It is due to the formati

1.	AlF_(3) soluble in HF only in presence of KF. It is due to the formation of
Answer» `K_(3)[AlF_(3)H_(3)]` `K_(3)[AlF_(6)]` `AlH_(3)` `Kl[AlF_(3)H]` Solution :Anhydrous`HF` is a covalentcompoundand is stronglyH-bounded . THEREFORE, it does not give `F^(-)`ions andhence `AlF_(3)`does notcompoundcontains `F^(-)` ions. Therefore, it combineswith `AlF_(3)` to form SOLUBLE COMPLEX, `K_(3)[AlF_(6)]` `AlF_(3) + 3KF rarr K_(3)[AlF_(6)]`

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