O-LevelChemistryStoichiometry5070/11 · Oct/Nov 2017 · Q311 Mark

Octane, C₈H₁₈, is a hydrocarbon that undergoes combustion in a petrol engine. ...W...C₈H₁₈ + ...X...O₂ → ...Y...CO₂ + ...Z...H₂O Which row shows the figures needed to balance the equation?

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A1, 8, 8, 9

B1, 17, 8, 9

C2, 16, 8, 9

D2, 25, 16, 18

✓ Correct answer

D: 2, 25, 16, 18

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Topic: Stoichiometry, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2017 Paper 1 Variant 1, question 31.

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