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The destrouction of a glass is based on the reaction:

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The destrouction of a glass is based on the reaction:

А.  2HF + KOH → KHF2 + H2O

B.  SiO2 + 2NaOH → Na2SiO3 + H2O

C.   SiO2 + 6HF → H2[SiF6] + 2H2O

D.  SiO2 + Na2CO3 → Na2SiO3 + CO2

E.  SiO2 + 2Mg → Si + 2MgO

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C.  SiO2 + 6HF → H2[SiF6] + 2H2O

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