Ozone depletion takes place as 2 O 3 ( g ) → 3 O 2 ( g ) Step-1 O 3 (g) ↔ K O 2 (g) + [O] Step-2 O 3 (g) + [O] → k 2O 2 (g) (slow) Order of the reaction will be

Step-by-step solution

Rate = k [ O 3 ] [ O ] ...(i) (for RDS) K = [ O 2 ] [ O ] [ O 3 ] …(i) [ O ] = K [ O 3 ] [ O 2 ] (from step 1) From equation (i) and (ii) Rate = k K [ O 3 ] 2 [ O 2 ] - 1 Order = 2 - 1 = 1