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O-LevelChemistryStoichiometry5070/12 · Oct/Nov 2018 · Q101 Mark

The incomplete equation for the reaction between ethyne, C2H2, and oxygen is shown. 2C2H2(g) + ....O2(g) → ....CO2(g) + ....H2O(g) When the equation is balanced, what is the correct value for O2(g)?

A2

B3

C4

D5

✓ Correct answer

D: 5

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About this question

Topic: Stoichiometry, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2018 Paper 1 Variant 2, question 10.

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