O-LevelChemistryStoichiometry5070/11 · May/June 2018 · Q101 Mark

When 1 volume of gas R reacts with exactly 5 volumes of oxygen, it forms carbon dioxide and water only. What is R?

Abutane, C₄H₁₀

Bethane, C₂H₆

Cmethane, CH₄

Dpropane, C₃H₈

✓ Correct answer

D: propane, C₃H₈

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Topic: Stoichiometry, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2018 Paper 1 Variant 1, question 10.

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