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AP EAMCET202120 Aug 2021Morning ShiftChemistryp Block Elements (Group 13 & 14)Actual

AlF 3 is soluble in H F only in the presence of K F due to formation of

Options

  1. AAlH 3
  2. BAlH 6 3 -
  3. CA l F 6 3 -
  4. DK A l F 3 H

Correct answer

C. A l F 6 3 -

Step-by-step solution

AlF 3 is not soluble in the anhydrous HF because of non availability of the F - ions to the intermolecular hydrogen which is bonded to HF but it possesses solubility in the presence of KF that is due to the formation of soluble complex. The full reaction is shown below: . AlF 3   +   3 KF   →   K 3 AlF 6 Thus, the correct option is AlF 6 3 -

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