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How does silicon dioxide react with hydrofluoric acid?

1 Answer

Mar 5, 2017

Silicon dioxide can give the $S i F_{6}^{2 -}$ $SiF_6^(2-)$ ion upon treatment with hydrofluoric acid.

Explanation:

$S i O_{2} (s) + 6 H F (a q) \to S i F_{6}^{2 -} + 2 H_{3} O^{+}$ $SiO_2(s) + 6HF(aq) rarr SiF_6^(2-) + 2H_3O^(+)$

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