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Kinetics and Equilibrium

# Kinetics and Equilibrium - Unit 12 Kinetics and Equilibrium...

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Unit 12: Kinetics and Equilibrium 50 point quiz (MC = 2 points each, SA = 10 points) 1. Which statement must be true when solution equilibrium occurs? a. The solution is at STP b. The solution is supersaturated c. The concentration of the solution remains constant d. The masses of the dissolved solute and the undissolved solute are equal 2. Given the equation representing a phase change at equilibrium: C 2 H 5 OH(l) ↔ C 2 H 5 OH(g), which statement is true? 3. Given the equation representing a reaction at equilibrium: N 2 (g) + 3H 2 (g) 2NH 3 (g) + energy, which change will cause the equilibrium to shift to the right? a. Decreasing the concentration of H 2 (g) b. Decreasing the pressure c. Increasing the concentration of N 2 (g) d. Increasing the temperature 4. Which statement must be true for any chemical reaction at equilibrium? 5. Given the system at equilibrium, 2POCl 3 (g) + energy ↔ 2PCl 3 (g) + O 2 (g), which changes occur when O 2 (g) is added to this system? a. The equilibrium shifts to the right and the concentration of PCl 3 (g) increases. b. The equilibrium shifts to the right and the concentration of PCl 3 (g) decreases. c. The equilibrium shifts to the left and the concentration of PCl 3 (g) increases. d. The equilibrium shifts to the left and the concentration of PCl 3 (g) decreases.

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Kinetics and Equilibrium - Unit 12 Kinetics and Equilibrium...

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