Chemistry - Complete Pblock- Question with Solution | TestHub

${\text{SiO}}_{\text{2}}\text{+}\text{4}\text{HF}\to {\text{SiF}}_{\text{4}}\text{+}{\text{2H}}_{\text{2}}\text{O ;}$
${\text{SiF}}_{\text{4}}\text{+}\text{2}\text{HF}\to {\text{H}}_{\text{2}}{\text{SiF}}_{\text{6}}$
$\text{HF}$is not preserved in glass bottles because it reacts with${\mathrm{S}\mathrm{i}\mathrm{O}}_2$of the glass.