Glass react with – InterviewSolution

1.	Glass react with
Answer» Oleum HF `HNO_(3)` `K_(2)Cr_(2)O_(7)` Solution :Glass reacts with HF.common glass is a mixture of `Na_(2)SiO_(3)` and `CaSiO_(3)` `Na_(2)SiO_(3)+8HF to 2Na+H_(2)SiF_(6)+3H_(2)O` `CaSiO_(3)+8HF to CaF_(2)+H_(2)SiF_(6)+3H_(2)O` `H_(2)SiF_(6)` is hydrofluorosilicic ACID .

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