The combustion of ethylene proceeds by the reaction C₂H₄(g) + 3O₂ (g) → 2CO₂ (g) + 2H₂O (g)
When the rate of disappearance of O₂ is 0.28 Ms^-1, the rate of appearance of CO₂ is __________ Ms^-1.

Question

Quizplus · Accepted Answer

From the stoichiometry of the reaction, we can see that 1 mole of C₂H₄ reacts with 3 moles of O₂ to produce 2 moles of CO₂. Therefore, the rate of appearance of CO₂ is 2/3 times the rate of disappearance of O₂. Since the rate of disappearance of O₂ is 0.28 Ms^-1, the rate of appearance of CO₂ is (2/3) x 0.28 Ms^-1 = 0.19 Ms^-1.

The Combustion of Ethylene Proceeds by the Reaction C2H4(g)+ 3O2

The Combustion of Ethylene Proceeds by the Reaction C₂H₄(g)+ 3O₂