[jsmith613]

for my end of year 9 test in school we have to learn chemistry of the stratosphere

are the following equations correct:

NO + O3 -> NO2 + O2
NO2 + O3 --> NO + 2O2

??

could the O3 in the second equation also be replaced by O

[JGK]

for my end of year 9 test in school we have to learn chemistry of the stratosphere

are the following equations correct:

NO + O3 -> NO2 + O2
NO2 + O3 --> NO + 2O2

??

could the O3 in the second equation also be replaced by O

Second equation is highly unlikely NO is highly reactive in the presence of oxygen

[Vidya]

NO reacts with O2 to form NO2

2NO + O2 ------>2 NO2
NO is more reactive

[jsmith613]

My reactions refer to happenings in the upper atmosphere where pO2 (partial pressure) is really really low

[kazeAaqib]

Yes the O3 can be replaced by O which would give the following equation
NO + O3 =>NO2 + O2     propagation step 1
NO2 + O => NO + O2      propagation step 2

This is part of the depletion of ozone and nitrogen is a radical atom in these equations

[vmelkon]

for my end of year 9 test in school we have to learn chemistry of the stratosphere

are the following equations correct:

NO + O3 -> NO2 + O2
NO2 + O3 --> NO + 2O2

??

could the O3 in the second equation also be replaced by O

Second equation is highly unlikely NO is highly reactive in the presence of oxygen

The second equation shows what happens if you add NO2 and O3 together.
Of course, the reaction can continue as
2NO + O2 => 2NO2

so NO2 gets regenerated.

I'm just guessing here. I don't know what happens in the upper stratosphere and the effects if ozone.

[jsmith613]

Yes the O3 can be replaced by O which would give the following equation
NO + O3 =>NO2 + O2     propagation step 1
NO2 + O => NO + O2      propagation step 2

This is part of the depletion of ozone and nitrogen is a radical atom in these equations

so both O3 and O can react with NO2 then?

[vmelkon]

Yes the O3 can be replaced by O which would give the following equation
NO + O3 =>NO2 + O2     propagation step 1
NO2 + O => NO + O2      propagation step 2

This is part of the depletion of ozone and nitrogen is a radical atom in these equations

so both O3 and O can react with NO2 then?

You are confusing NO and NO2