Question

"The combustion of ethylene proceeds by the reaction C₂H₄(g) + 3O₂ (g)→ 2 CO₂(g) + 2 H₂O(g).

When the rate of disappearance of O₂ is 0.23 M/s, the rate of disappearance of C₂H₄ is_____M/s.

A) 0.69
B) 0.35
C) 0.077
D) 0.46

Answer 1

The rate of disappearance of C₂H₄ is 0.077 M/s.

Step-by-step explanation:

The rate of disappearance of O₂ can be used to determine the rate of disappearance of C₂H₄ in the given combustion reaction. According to the balanced equation, the ratio of the coefficients between O₂ and C₂H₄ is 3:1. Therefore, if the rate of disappearance of O₂ is 0.23 M/s, then the rate of disappearance of C₂H₄ would be 1/3 of that, which is 0.23/3 = 0.077 M/s.