The combustion of ethylene proceeds by the reaction C₂H₄ (g) + 3O₂ (g) → 2CO₂ (g) + 2H₂O (g)
When the rate of disappearance of O₂ is 0.23 Ms^-1, the rate of disappearance of C₂H₄ is __________ Ms^-1.

Question

Quizplus · Accepted Answer

From the balanced chemical equation, we can see that the stoichiometric coefficient of O2 is 3 and that of C2H4 is 1. Therefore, the rate of disappearance of C2H4 is one-third of that of O2. Thus, the rate of disappearance of C2H4 is 0.23/3 = 0.077 Ms-1. Therefore, the answer is choice (B).

The Combustion of Ethylene Proceeds by the Reaction C2H4 (G)

The Combustion of Ethylene Proceeds by the Reaction C₂H₄ (G)