Chemistry 121 Ch 6 Activity Sheet Name___________________________
1. (5 points) Draw the energy diagram for the following reaction. Specify Activation Energy (Ea), Heat of Reaction H, label the axes, and specific reactant and product species on your graph.
2NO(g)↔ N2(g) + O2(g) H = XXXXXXXXXXkcal, Ea = 5 kcal
2. (5 points) A. Write the equili
ium expression for the reaction: 2NO(g) ↔ N2(g) + O2(g
B. Calculate the equili
ium constant, at equili
ium concentrations of [N2] = 0.78M,
[O2] = 0.21M, [NO]= 9x10-4M. Which does the reaction favor, products or reactants?
3. (5 points) Consider the reaction above at equili
ium in a closed container. Which way would the reaction go (to form more reactants or products) to regain equili
ium under the following conditions, and will the other products and reactants increase or decrease in concentration?
Reaction Direction Effect on reactant(s), product
a. More N2 is added NO O2
. More NO is added N2 O2
c. The temperature is raised NO N2 O2
d. O2 is removed NO N2
e. Pressure is increased (Vol. decreased) NO N2 O2
4. (5 points) For the Bunsen burner reaction, CH4(g) + 2O2(g) → CO2(g) + 2H2O(l) H = XXXXXXXXXXkJ
How much energy (in kJ) is associated with the reaction of burning 5.00 g of CH4 with 9.00 g O2? (Hint: this is a limiting reactant problem)