A. The reaction A B is described in the following graph. (7 points)
i. What does it mean for a reaction to be at dynamic equilibrium? (2 points)
ii. Which line on the graph (1, 2, or 3) represents the system at dynamic equilibrium? Explain your answer. (1 point)
iii. Describe the rate of the reaction at equilibrium. (1 point)
iv. If Keq << 1 for the reaction A B, would the reaction favor products or reactants? Explain your answer. (1 point)
b. Use the reaction 2H2(g) + S2(g) 2H2S(g) for the following questions. (3 points)
i. Write the equilibrium constant for this reaction. (1 point)
ii. If a sample at equilibrium contained 0.051 M H2, 0.087 M S2, and 0.97 MH2S, what would Keq be for this reaction? (1 point)
iii. According to Le Châtelier's principle, what would happen to the equilibrium conditions if more S2 were added to the system? (1 point)
c. For the reaction SO2(g) + NO2(g) NO(g) + SO3(g), Keq = 10.8.
A sample of this gas mixture was analyzed and found to contain 0.9 M NO, 1.7 MSO3, 0.07 M SO2, and 1.3 M NO2. Is the system at equilibrium? If so, explain why. If not, which way will it shift to reach equilibrium? (2 points)