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प्रश्न
Explain the following:
BF3 does not hydrolyse.
उत्तर
Unlike other boron halides, BF3 does not hydrolyse completely. Instead, it hydrolyses incompletely to form boric acid and fluoroboric acid. This is because the HF first formed reacts with H3BO3.
\[\ce{BF3 + 3H2O -> H3BO3 + 3HF] × 4}\]
\[\ce{H3BO3 + 4HF -> H^{+} + [BF4]^{-} + 3H2O] × 3}\]
\[\ce{4BF3 + 3H2O -> H3BO3 + 3[BF4]^{-} + 3H+}\]
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