1. Chapter 16
Chemical Kinetics

2. Example 16-1

3. Concentrations of Reactants: The Rate-Law Expression

4. Concentrations of Reactants: The Rate-Law Expression

5. Concentrations of Reactants: The Rate-Law Expression

6. Example 16-2

7. Concentrations of Reactants: The Rate-Law Expression

8. Concentrations of Reactants: The Rate-Law Expression

9. Concentrations of Reactants: The Rate-Law Expression

10. Concentrations of Reactants: The Rate-Law Expression

11. Example 16-3

12. Concentrations of Reactants: The Rate-Law Expression

13. Concentrations of Reactants: The Rate-Law Expression

14. Concentrations of Reactants: The Rate-Law Expression

15. Concentration vs. Time: The Integrated Rate Equation
Example 16-4: Cyclopropane, an anesthetic, decomposes to propene according to the following equation.
The reaction is first order in cyclopropane with k = 9.2 s-1 at 10000C. Calculate the half life of cyclopropane at 10000C.

16. Concentration vs. Time: The Integrated Rate Equation
Example 16-5: Refer to Example How much of a 3.0 g sample of cyclopropane remains after 0.50 seconds?

17. Concentration vs. Time: The Integrated Rate Equation
Example 16-6: The half-life for the following first order reaction is 688 hours at 10000C. Calculate the specific rate constant, k, at 10000C and the amount of a 3.0 g sample of CS2 that remains after 48 hours.
CS2(g) ® CS(g) + S(g)

18. Concentration vs. Time: The Integrated Rate Equation
Example 16-7:
The rate-law expression is Rate = k[CH3CHO]2, and k = 2.0 x 10-2 L/(mol.hr) at 527oC. (a) What is the half-life of CH3CHO if 0.10 mole is injected into a 1.0 L vessel at 527oC?

19. Concentration vs. Time: The Integrated Rate Equation
(b) How many moles of CH3CHO remain after 200 hours?

20. Concentration vs. Time: The Integrated Rate Equation
(c) What percent of the CH3CHO remains after 200 hours?

21. Concentration vs. Time: The Integrated Rate Equation
Example 16-8: Refer to Example (a) What is the half-life of CH3CHO if 0.10 mole is injected into a 10.0 L vessel at 527oC?
Note that the vessel size is increased by a factor of 10 which decreases the concentration by a factor of 10!

22. Concentration vs. Time: The Integrated Rate Equation
(b) How many moles of CH3CHO remain after 200 hours?

23. Concentration vs. Time: The Integrated Rate Equation
(c) What percent of the CH3CHO remains after 200 hours?

24. Synthesis Question