Write the equilibrium law expression, K.

Quiz 4 Name _________________________

Directions: Please use correct significant figures and units wherever applicable. Show ALL work.

  1. For the following reaction, CO(g) + 2H2(g) CH3OH(g) a. Write the generic rate law.

b. Write the equilibrium law expression, K.

  1. Which of the following is/are true at equilibrium? a. [products] = [reactants] b. Rateforward = Ratereverse c. The reaction has come to a stop d. All of the above e. none of the above

  2. For the equilibrium

CO(g) + 2H2(g) CH3OH(g) ΔHrxn = +40.7 kJ/mol

How will the amount of CH3OH at equilibrium be affected by the following changes? [2 pts each]

a. Adding CO(g) b. Removing H2(g) c. Increasing the volume of the container d. Lowering the temperature e. Adding a catalyst

  1. For the equilibrium,

CO(g) + 2H2(g) CH3OH(g) Kp = 1.8×10-4

a. What is the value of Kc?

b. At the instant when a reaction vessel at 2300 K contains 0.50 M CO, 0.25 M H2, and 0.0042 M CH3OH, is the reaction mixture at equilibrium? If not, in which direction will the reaction proceed to reach equilibrium? Show all work.

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