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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)
Answered Same DayMay 16, 2022

Answer To : I attach the file

Dr Shweta answered on May 16 2022
9 Votes
Chemistry 121 Ch 6 Activity Sheet                Name___________________________
Solutions
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 = - 43 kcal, Ea = 5 kcal
Ans: Energy diagram for the following reaction is
2. (5 points) A. Write the equili
ium expression for the reaction: 2NO(g) ↔ N2(g) + O2(g
Ans: Kc = [N2] [O2]/[NO]2
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?
Ans: Kc = 0.78*0.21/ [9*10-4]2
On solving we get, Kc = 2 * 105
Since Kc is greater than 1 so product formation is...
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