Question

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

When the rate of disappearance of O2 is 0.33 Ms−1, the rate of disappearance of C2H4 is ________ Ms⁻¹.
A) 0.22
B) 0.50
C) 0.11
D) 0.66
E) 0.99

Answer 1

The rate of disappearance of C2H4 is 0.11 Ms⁻¹.

Step-by-step explanation:

The rate of disappearance of C2H4 can be determined using the stoichiometric coefficients in the balanced chemical equation for the combustion of ethylene. From the equation, we can see that for every 3 moles of O2 consumed, 1 mole of C2H4 will be consumed. Since the rate of disappearance of O2 is given as 0.33 Ms⁻¹, we can calculate the rate of disappearance of C2H4 as follows:

Rate of disappearance of C2H4 = (1 mole C2H4 / 3 moles O2) * (0.33 Ms⁻¹) = 0.11 Ms⁻¹