Chemistry · Oct / Nov 2018 · Paper 12 · Question 10

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)?

1. A2
2. B3
3. C4
4. D5

As printed in the paper