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JEE Mains · Chemistry · STD 11 -p-Block elements - I
The gas evolved on heating \(CaF_2\) and \(SiO_2\) with concentrated \(H_2SO_4\), on hydrolysis gives a white gelatinous precipitate. The precipitate is
- A hydrofluosilicic acid
- B silica gel
- C silicic acid
- D calciumfluorosilicate
Answer & Solution
Correct Answer
(D) calciumfluorosilicate
Step-by-step Solution
Detailed explanation
\(2CaF_2 + SiO_2 + H_2SO_4\, \longrightarrow\) \(Si{F_4} + {H_2}O + CaS{O_4}\xrightarrow{{hydrolysis}}CaSi{F_6}\)
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