WBJEE · Chemistry · p Block Elements (Group 13 & 14)
\(\mathrm{SiO}_{2}\) is attacked by which one / ones of the following?
- A HF
- B conc. HCl
- C hot \(\mathrm{NaOH}\)
- D Fluorine
Answer & Solution
Correct Answer
(D) Fluorine
Step-by-step Solution
Detailed explanation
Hint: \(\mathrm{SiO}_{2}(\mathrm{~s})+\mathrm{F}_{2}(\mathrm{~g}) \rightarrow \mathrm{SiF}_{4}(\mathrm{aq} .)+\mathrm{O}_{2}(\mathrm{~g})\) \(\mathrm{SiO}_{2}(\mathrm{~s})+6 \mathrm{HF}\) (aq.) \(\rightarrow \mathrm{H}_{2} \mathrm{SiF}_{6}\) (aq.)…
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