Reaction Rates & Equilibrium Review Chapter 18 (CP)

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

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

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

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

5. Write the equilibrium expression for the following reaction: 2NaHCO3  Na2CO3 + CO2 + H2O 3. 4. 1. 2.

6. Calculate the equilibrium constant for the reaction if [NH3] = 0 6. Calculate the equilibrium constant for the reaction if [NH3] = 0.933M, [N2] = 0.553 & [H2] = 1.600 M for the following reaction: N2 + 3H2  2NH3 1.09 0.399 0.188 0.780

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

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

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) Shift right Shift left No change

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

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

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 Shift right Shift left No change

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

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 Shift right Shift left No change

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 0.602 mol N2, and 0.42 mol H2. Calculate concentration of NH3 N2 (g) + 3H2 (g)  2NH3(g) K = 0.286