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Question

(A) Glass is primarily composed of silica $(SiO_2)$. When it reacts with hydrofluoric acid $(HF)$,it forms silicon tetrafluoride $(SiF_4)$ and water.

Vedclass · Accepted Answer

$SiF_4$

Vedclass · Answer

(A) Glass is primarily composed of silica $(SiO_2)$. When it reacts with hydrofluoric acid $(HF)$,it forms silicon tetrafluoride $(SiF_4)$ and water. The reaction is: $SiO_2 + 4HF \rightarrow SiF_4 + 2H_2O$. Further,$SiF_4$ can react with excess $HF$ to form hydrofluorosilicic acid $(H_2SiF_6)$,but the primary product of the reaction with glass is $SiF_4$.

Glass reacts with $HF$ to produce

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