Qno.1: 19. The depletion of ozone involves the following steps: Step 1 : O 3 ⇌ K 2 K 1 O 2 + O fast Step 2 : O 3 + O → K 2 O 2 slow The predicted order of the reaction will be. (1) First (2) 1.5 (3) -1.5 (4) Zero. Share with your friends Share 34 Gaurav Singh answered this Dear Student Regards 107 View Full Answer