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Explain the phenomena of itching of glass |
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Answer» SOLUTION :When `SiO_2` is TREATED with HF, SILICON TETRAFLUORIDE is formed which dissolves in HF to form hydrofluorosilicic acid . `SiO_2 + 4HF to SiF_4 + 2H_2 O` `SiF_4 + 2HF to underset("Hydrofluorosilicic acid")(H_2 SiF_6)` |
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