When a hydrocarbon A undergoes combustion in the presence of air, it requires 9.5 equivalents of oxy โ JEE Mains Chemistry Past Papers Chemistry Question
Question
When a hydrocarbon A undergoes combustion in the presence of air, it requires 9.5 equivalents of oxygen and produces 3 equivalents of water. What is the molecular formula of A? (A) C9H6 (B) C6H6 (C) C8H6 (D) C9H9
Answer: C
๐ก Solution & Explanation
CxHy + (๐ฅ+ ๐ฆ 4)O2 ๏พ๏ฎ xCO2 + ๐ฆ 2H2O No. of equivalents of O2 = No. of equivalents of H2O No. of equivalents of H2O = ๐ฆ 2 = 3 y = 6 No. of equivalents of O2 = x + ๐ฆ 4 = 9.5 x + 4 = 9.5 x = 9.5 โ 1.5 = 8 CxHy = C8H6 | JEE(Main) 2023 | DATE : 29-01-2023 (SHIFT-2) | PAPER-1 | OFFICIAL PAPER | CHEMISTRY PAGE # 4
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