The product obtained when silica reacts with hydrogen fluoride is

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When silica (SiO₂) react with 4 moles of Hydrogen fluoride then Silicon tetrafluoride or Tetrafluorosilane is formed. The reaction takes place is given below:

When silica (SiO₂) react with 6 moles of Hydrogen fluoride then Hexafluorosilicic acid is formed. The reaction takes place is given below:

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