HALOALKANES-OZONE LAYER

Question 1

WHAT IS OZONE

Answer 1

pale blue poisonous gas that forms in the earths atmosphere

Question 2

what can ozone cause

Answer 2

skin cancer and damaged leaves

Question 3

what can ozone be broken down by

Answer 3

chlorine radicals

Question 4

what are CFCs

Answer 4

CCl3F THAT BREAKS DOWN OZONE

Question 5

what mechanism do CFCs use

Answer 5

free radical sub

Question 6

initiation step of ozone depletion

Answer 6

CCl3F à Cl* + *CCl2F

Question 7

propagation step for ozone

Answer 7

i. Cl* + O3 ⟶ ClO* + O2

ii. ClO* + O3 ⟶ 2O2 + Cl*

Question 8

CFCs were so damaging to the ozone layer, as the breakdown of ozone can be caused by a single chlorine free-radical. This is because:

Answer 8

Cl● is regenerated in the final propagation step (and causes a chain reaction in the decomposition of ozone)