Butane, C₄H₁₀, burning in air, is an example of a substance combining with oxygen to produce CO₂ and H₂O. If pure oxygen were to be supplied, the rate of combustion would increase significantly. Then there is more energy given off when 10 g of butane burns in pure oxygen, rather than in air.

Question

Quizplus · Accepted Answer

The energy given off when butane burns is determined by its chemical composition and the amount of butane burned, not by whether it burns in air or pure oxygen. The rate of combustion would increase in pure oxygen, but the total energy released remains the same for a given amount of butane.

Butane, C4H10, Burning in Air, Is an Example of a Substance

Butane, C₄H₁₀, Burning in Air, Is an Example of a Substance