[Scholar98]

1.   The average rate of disappearance of ozone in the reaction 2O3(g) → 3O2(g) is found to be 9.0 × 10–3 atm over a certain interval of time. What is the rate of appearance of O2 during this interval?
   a)   1.3 × 10–2 atm/s
   b)   9.0 × 10–3 atm/s
   c)   6.0 × 10–3 atm/s
   d)   3.0 × 10–5 atm/s
   e)   2.7 × 10–5 atm/s
   ANS:   a)   1.3 × 10–2 atm/s
To solve this I multiplied 9.0E-3 by (2/3) which gave me choice C why is this wrong. Thanks for your help.

[Borek]

You are on the right track - but you got it reversed.

[Scholar98]

I am confused why it should be (3/2) because isn't oxygen whats being formed?

[mjc123]

Yes, and you form 3 oxygen molecules for every 2 ozone molecules consumed. Therefore.