Reaction Mechanisms, Intermediates... 48. A proposed mechanism for the photodecomposition of ozone in the atmosphere is Step 1: O3(g)+hvO2(g)+O(g) Step 2: O3(g)+O(g)2O2(g) Which of the following species is an intermediate? a. O3 d. O b. hv c. This mechanism has no intermediates. c. O2 49. A proposed mechanism for the decomposition of ozone in the atmosphere is Step 1: Cl(g)+O3(g)ClO(g)+O2(g) Step 2: ClO(g)+O3(g)Cl(g)+2O2(g) Which of the following species is an intermediate? a. Cl d. O2 b. O3 e. This mechanism has no intermediates. c. ClO 50. The reaction NO2(g)+CO(g)NO(g)+CO2(g) is thought to occur by the following mechanism: Step 1: NO2(g)+NO2(g)NO3(g)+NO(g) Step 2: NO3(g)+CO(g)NO2(g)+CO2(g) Which of the following species is an intermediate? a. NO2 d. CO2 b. NO e. This mechanism has no intermediates. c. NO3