1. Review:
Net: Q + 2R  S + T
Step 1: Q + R  QR
Step 2: QR + X  2S
Step 3: S + R  T + X
What is the rate law for the reaction shown?

2. Reversible Reactions:
NO(g) + O3(g)  NO2 + O2 O N O O O
Reactions don’t only go in the forward direction, they can go in reverse as well!!!

3. Reversible Reactions:
NO(g) + O3(g)  NO2 + O2 O N O O O
Reactions don’t only go in the forward direction, they can go in reverse as well!!!

4. Reversible Reactions:
NO(g) + O3(g)  NO2 + O2 O N O O O
Reactions don’t only go in the forward direction, they can go in reverse as well!!!

5. Reversible Reactions:
NO(g) + O3(g)  NO2 + O2 O N O O O
Reactions don’t only go in the forward direction, they can go in reverse as well!!!

6. Reversible Reactions:
NO(g) + O3(g)  NO2 + O2 O N O O O
Reactions don’t only go in the forward direction, they can go in reverse as well!!!

7. Reversible Reactions:
NO(g) + O3(g)  NO2 + O2 O N O O O
Reactions don’t only go in the forward direction, they can go in reverse as well!!!

8. Reversible Reactions:
NO(g) + O3(g)  NO2 + O2 O N O O O
Reactions don’t only go in the forward direction, they can go in reverse as well!!!

9. Reversible Reactions:
NO(g) + O3(g)  NO2 + O2 O N O O O
Reactions don’t only go in the forward direction, they can go in reverse as well!!!

10. Reversible Reactions:
NO(g) + O3(g)  NO2 + O2 O N O O O
Reactions don’t only go in the forward direction, they can go in reverse as well!!!

11. Reversible Reactions:
NO(g) + O3(g)  NO2 + O2 O N O O O
Reactions don’t only go in the forward direction, they can go in reverse as well!!!

12. Reversible Reactions:
NO(g) + O3(g)  NO2 + O2 O N O O O
Reactions don’t only go in the forward direction, they can go in reverse as well!!!

13. Reversible Reactions:
NO(g) + O3(g)  NO2 + O2 O N O O O
Reactions don’t only go in the forward direction, they can go in reverse as well!!!

14. Reversible Reactions:
NO(g) + O3(g)  NO2 + O2 O N O O O
Reactions don’t only go in the forward direction, they can go in reverse as well!!!

15. Reversible Reactions:
NO(g) + O3(g)  NO2 + O2 O N O O O
Reactions don’t only go in the forward direction, they can go in reverse as well!!!

16. Reversible Reactions:
NO(g) + O3(g)  NO2 + O2 O N O O O
Reactions don’t only go in the forward direction, they can go in reverse as well!!!

17. Reversible Reactions:
NO(g) + O3(g)  NO2 + O2 O N O O O
Reactions don’t only go in the forward direction, they can go in reverse as well!!!

18. Reversible Reactions:
NO(g) + O3(g)  NO2 + O2 O N O O O
Reactions don’t only go in the forward direction, they can go in reverse as well!!!

19. Reversible Reactions:
NO(g) + O3(g)  NO2 + O2 O N O O O
Reactions don’t only go in the forward direction, they can go in reverse as well!!!

20. Reversible Reactions:
NO(g) + O3(g)  NO2 + O2 O N O O O
Reactions don’t only go in the forward direction, they can go in reverse as well!!!

21. Reversible Reactions:
NO(g) + O3(g)  NO2 + O2
For reactions that can do this, we write the reaction arrow like this …
Reactions don’t only go in the forward direction, they can go in reverse as well!!!

22. Reversible Reactions:
Activation energy for the forward rxn and for the reverse rxn …
Enthalpy for the forward rxn and for the reverse rxn …

23. Reversible Reactions:
Which arrow represents the …
a. Ea for step 1 of the forward rxn.
b. Ea for step 1 of the reverse rxn.
c. Overall Ea of the reverse rxn.
d. The slowest step of the forward rxn. mechanism
e. The fastest step of the reverse rxn. mechanism
f. The ∆H of the reverse rxn.