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P Block Elements question

2016 · Q95
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P Block Elements question

2016 · Q95

NEETChemistryP Block ElementsMCQ+4 / −1
AlF3 is soluble in HF only in presence of KF. It is due to the formation of
  1. A
    K3[AlF3H3]
  2. B
    K3[AlF6]
  3. C
    AlH3
  4. D
    K[AlF3H]
View written solutionFree

Correct answer: B

AlF3 is insoluble in anhydrous HF because the F– ions are not available in hydrogen bonded HF but, it becomes soluble in presence of little amount of KF due to formation of complex, K3[AIF6].

AIF3 + 3KF →\to→ K3[AIF6].

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