The gas evolved on heating CaF2 and SiO2 with concentrated H2SO4, on hydrolysis gives a white gelatinous precipitate. The precipitate is

The p-Block Elements

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03/01/2022 1:20 pm

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Shilpi98

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The gas evolved on heating CaF₂ and SiO₂ with concentrated H₂SO₄, on hydrolysis gives a white gelatinous precipitate. The precipitate is

(a) hydrofluosilicic acid

(b) silica gel

(d) calcium fluorosilicate

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03/01/2022 1:24 pm

Riya08

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Correct answer: (d) calcium fluorosilicate

Explanation:

2CaF₂ + SiO₂ + H₂SO₄ → SiF₄ + H₂O + CaSO₄ + hydrolysis → CaSiF₄

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