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Question

Which hydrocarbon with 5 carbon atoms requires the least amount of oxygen per mole for complete combustion?

Options

Choose one · Correct answer highlighted

Explanation

Cyclopentane (C₅H₁₀) requires 15/2 O₂ (C₅H₁₀ + 15/2 O₂ -> 5CO₂ + 5H₂O), less than pentane’s 8 O₂.