1. Reaction Rates & Equilibrium Review
Chapter 18 (CP)

2. 1. True or False: All reactions proceed at the same rate.

3. 2. Which is a factor that effects reaction rate?
Temperature
Surface area
Concentration
All the Above

4. 3. Which of the following is true when a reaction is in equilibrium?
The reaction stops
The concentration of products and reactants stays the same.
The rate of the forward reaction equals the rate of the reverse reaction.
A reaction is never truly in equilibrium.
Both answers #1 & 2
Both answers #2 & 3

5. 4. At what time does the reaction reach equilibrium?
0 sec
8 sec
10 sec
15 sec
concentration P 8 10 15
Time ( Seconds )

6. 5. Write the equilibrium expression for the following reaction: 2NaHCO3  Na2CO3 + CO2 + H2O3. 4. 1. 2.

7. 6. Calculate the equilibrium constant for the reaction if [NH3] = 0
6. Calculate the equilibrium constant for the reaction if [NH3] = 0.933M, [N2] = & [H2] = M for the following reaction: N2 + 3H2  2NH3
1.09
0.399
0.188
0.780

8. 7. How will adding H2O effect the reaction
7.How will adding H2O effect the reaction? H2(g) + CO2(g)  H2O(g) + CO(g)
Shift right
Shift left
No change

9. 8. How will removing CO effect the reaction
8. How will removing CO effect the reaction? H2(g) + CO2(g)  H2O(g) + CO(g)
Shift right
Shift left
No change

10. 9. How will adding something to absorb CO2 effect the reaction
9. How will adding something to absorb CO2 effect the reaction? H2(g) + CO2(g)  H2O(g) + CO(g)
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No change

11. 10. How will increasing pressure effect the reaction
10. How will increasing pressure effect the reaction? H2(g) + CO2(g)  H2O(g) + CO(g)
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No change

12. 11. How will increasing pressure effect the reaction
11. How will increasing pressure effect the reaction? C2H4(g) + H2(g)  C2H6(g) + heat
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No change

13. 12. How will placing it in the freezer effect the reaction
12. How will placing it in the freezer effect the reaction? C2H4(g) + H2(g)  C2H6(g) + heat
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No change

14. 13. How will removing hydrogen effect the reaction
13. How will removing hydrogen effect the reaction? C2H4(g) + H2(g)  C2H6(g) + heat
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No change

15. 14. How will adding a catalyst effect the reaction
14. How will adding a catalyst effect the reaction? C2H4(g) + H2(g)  C2H6(g) + heat
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No change

16. We place some nitrogen and hydrogen in an empty 1
We place some nitrogen and hydrogen in an empty 1.00 liter vessel at 500°C.
When equilibrium is established, there are mol N2, and mol H2. Calculate concentration of NH3
N2 (g) + 3H2 (g)  2NH3(g)
K = 0.286