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AlF(3) is insoluble in anhydrous HF but ...

`AlF_(3)` is insoluble in anhydrous HF but when little KF is added to the compound it becomes soluble. On addition of `BF_(3),AlF_(3)` is precipitated. Write balanced chemical equation.

Text Solution

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`3KF+AlF_(3)toK_(3)[AlF_(6)]`
`K_(3)[AlF_(6)]+3BF_(3)toAlF_(3)+3K[BF_(4)]`
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