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Chemistry · PYQ NEET UG 2016(2)

हिन्दी

\( \text{AlF}_3 \) is soluble in \( \text{HF} \) only in the presence of \( \text{KF} \). It is due to the formation of

  1. \( \text{K}[\text{AlF}_3\text{H}] \)
  2. \( \text{K}_3[\text{AlF}_3\text{H}_3] \)
  3. \( \text{K}_3[\text{AlF}_6] \)
  4. \( \text{AlH}_3 \)

Correct answer · Option 3

\( \text{K}_3[\text{AlF}_6] \)

Explanation

Reaction of \( \text{AlF}_3 \) with \( \text{KF} \) and \( \text{HF} \) yields potassium hexafluoroaluminate, \( \text{K}_3[\text{AlF}_6] \), due to complex formation.
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