JEE Advanced Chemistry question
XeF6 reacts with quartz, forming XeO3: 2XeF6 + xSiO2 → 2XeO3 + ... . What is the value of x?
Answer: 3
Solution
Balancing 2XeF6 + xSiO2 → 2XeO3 + ySiF4: Xe balances as 2 = 2. Fluorine: left has 2×6 = 12 F; right, each SiF4 carries 4 F, so y × 4 = 12, giving y = 3 (3 SiF4). Silicon then requires x = y =
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