Question

22. Explain why atoms of bro oms of bromine destroys more ozone than does chlorine? (3 points) 23. Which reactions are catalyzed in stratosphere? (3 points) 24. Why is not NO, present in stratosphere at the hy is not NO, present in stratosphere at the palatform inactive chlorine nitrates shown in the reaction CIO + NO, CIONO2. (3 points)

Answer 1

ent (22) Explain why atoms of bromine a more ozone than does chlorine ? 2 Bromine is much more efficien at destroying the ozone because it to much faster reaction than does chlorine. Bromine is always in an active state I that is because ok of inactive forme are easily photochemically decomposed I to the active state and also this reac- I tion is slow reaction to proceed the bromine to an inactive state. - As we know, bromine and chlorine both are effectively react with ozone with the I and I cycles of mechanism. While almost 99% of chlorine typically is Hed up in reservoir species like as clonoz and Ha very small amount I of bromine is hed up in similar species I so that atoms of bromine destroys more ozone than does chlorine, 23 Which reactions are catalyzed in stratosphere ? 7 followings are the catalyzed reactions which contribute to most ssignificantly to Lozone destruction in the stratosphere - 1 Oz + oH 0₂ THO₂ 2) 0 + Ho2 o2+ oH Overall 03 + 0 + 202.

in other woords - Oz + UVB -> Ol + O2 (ultraviolet) 03+0 -202 overall 203 x 3 0₂ 0
Above are answers of question 22 and 23 with explanation.