1. Review: Which type of disturbance happens at t = 2 minutes in each of the following concentration vs. time graphs for the reaction N2O4 + heat ↔ 2NO2

2. Equilibrium Expression Manipulations:
Manipulation #1 (Let’s do it together)
Write the equilibrium expression, K1, for:
C(s) + ½ O2 (g) ↔ CO(g) K1 =
Write the equilibrium expression, K2, for: 2 C(s) O2 (g) ↔ 2 CO(g) K2 =
Mathematical relationship?

3. Equilibrium Expression Manipulations:
Manipulation #1 (Let’s do it together)
Write the equilibrium expression, K3, for: N2O4(g) ↔ 2NO2(g) K3 =
Write the equilibrium expression, K4, for: 3 N2O4(g) ↔ 6 NO2(g) K4 =
Mathematical relationship?

4. Equilibrium Expression Manipulations:
Manipulation #1 (Let’s do it together)
“When multiplying an equation by a multiplication factor to change the coefficients, the K of the original equation can be manipulated to equal the K of the new equation ____________.”

5. Equilibrium Expression Manipulations:
Manipulation #1 (Let’s do it together)
“When multiplying an equation by a multiplication factor to change the coefficients, the K of the original equation can be manipulated to equal the K of the new equation by raising the original K to the power of the multiplication factor.”

6. Equilibrium Expression Manipulations:
Manipulation #2 (on your own)

7. Equilibrium Expression Manipulations: Manipulation #2 (on your own)
“The equilibrium constants for a reaction and its reverse are _________________ of one another.”

8. Equilibrium Expression Manipulations: Manipulation #2
“The equilibrium constants for a reaction and its reverse are reciprocals of one another.”

9. Equilibrium Expression Manipulations:

10. Equilibrium Expression Manipulations: Manipulation #3
“When two or more equations are added to produce a net equation, the K for the net equation is the ______ of the K values from the added equations.”

11. Equilibrium Expression Manipulations: Manipulation #3
“When two or more equations are added to produce a net equation, the K for the net equation is the product of the K values from the added equations.”

12. Practice w/ 1 manipulation at a time:
1. H2 + Br2 ↔ 2HBr K = 56
What is the equilibrium constant for 2HBr ↔ H2 + Br2 ?
2. butane ↔ isobutane K = 2.5
What is the equilibrium constant for ½ butane ↔ ½ isobutane?
3. Using the two reactions given below, what is the equation constant for H2SO3 ↔ 2 H+ + SO32-
H2SO3 ↔ H+ + HSO3- K =
HSO3- ↔ H+ + SO32- K = 4.6x10-4

13. Practice w/ multiple manipulations:
4. 3/2 O2 (g) ↔ O3 (g) K = 2.5 x 10-29
What is the value of K for the conversion of two moles of ozone to oxygen?

14. Practice w/ multiple manipulations:

15. Manipulations Practice:

16. Manipulations Practice: