Ozone

Question 1

what does ozone in the troposphere and stratosphere do?

Answer 1

troposphere: respiratory irritant
stratosphere: absorbs high frequency uv from the sun which would otherwise cause skin cancer, eye damage, crop damage

Question 2

what is the structure and bonding of ozone like?

Answer 2

simple covalent molecule
dative bond from central O atom
O=O->O

Question 3

state and explain shape and bond angle of ozone

Answer 3

• 2 bonding sets of e- and 1 lone pair around the central atom
• repel to get as far apart as possible
• lone pair repels more than bonding pairs
• shape is bent/non-linear
• angle is 117.5

Question 4

two formation rxns of ozone

Answer 4

O2 –>2O (in presence of uv)
O2 + O –> O3

Question 5

two reactions for breakdown of ozone

Answer 5

O3 –> O2 + O (in presence of uv)
O3 + O –> 2O2

Question 6

what is steady state?
where should it occur?

Answer 6

ozone is formed and broken down at the same rate
should occur in the stratosphere