Question

The average rate of disappearance of ozone in the reaction 2O3(g) → 3 O2(g) is found to be 7.91×10–3 atm over a certain interval of time. What is the rate of appearance of O2 during this interval?

Answer 1

11.865 x 10⁻³ atm over a certain interval of time.

Step-by-step explanation:

• As the reaction: 2O₃ → 3O₂,

• The rate of the reaction = - d[O₃] / 2dt = d[O₂] / 3dt,

where, (- d[O₃] / dt) is the rate of disappearance of ozone = 7.91 × 10⁻³ atm over a certain interval of time,

(d[O₂] / dt) is the rate of appearance of O₂.

∴ The rate of appearance of O₂ = (d[O₂] / dt) = (- 3d[O₃] / 2dt) = 3(the rate of disappearance of ozone) / 2 = [3 ( 7.91 × 10⁻³ atm over a certain interval of time] / 2 = 11.865 x 10⁻³ atm over a certain interval of time.