(a)[2]
Construct an equation for the complete combustion of butane, $\text{C}_4\text{H}_{10}$.
(b)[2]
Explain in terms of bond making and bond breaking why this reaction is exothermic.
(c)[1]
Give a single use for the paraffin (kerosene) fraction.
Chemistry 5070 · O Level · Alkanes
Alkanes — practice question
When hydrocarbons burn completely, they produce carbon dioxide and water.
Worked solution & mark scheme
This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Correct reactants/products are: 2C₄H₁₀ + 13O₂ → 8CO₂ + 10H₂O” …
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