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16. Identify the correct expression for Kc for the reaction: H2 (g) + I2 (g) = 2 HI (g) A) K. [H2][l2] [HI]² B) K. = [HI]² ' [HI]? C) K. = %3D [H2][I2] [HI]2 D) K. = [H2] %3D

16. Identify the correct expression for Kc for the reaction: H2 (g) + I2 (g) = 2 HI (g) A) K. [H2][l2] [HI]² B) K. = [HI]² ' [HI]? C) K. = %3D [H2][I2] [HI]2 D) K. = [H2] %3D

Chemistry
Chemistry
9th Edition
ISBN:9781133611097
Author:Steven S. Zumdahl
Publisher:Steven S. Zumdahl
Chapter13: Chemical Equilibrium
Section: Chapter Questions
Problem 10RQ: The only stress (change) that also changes the value of K is a change in temperature. For an...
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16. Identify the correct expression for Kc for the reaction: H2 (g) + I2 (g) = 2 HI (g) [H2][l2] [HI]2 А) К. — B) K. = [HI]² [HI]? C) K. = [HI]? D) K = [H2] 17. For the reaction A(g) +B (g) = C (g), vou know that Kc = 51.0 at a certain temperature. What will happen to the value of Kc if you add more A to the equilibrium mixture? A) It will go up. B) It will go down. C) It will stay the same. D) It is impossible to predict how Kc would change. 18. You study the equilibrium reaction 2 A (aq) = B (aq) + C (aq). You place a 1.0 M solution of A into an empty 1.0 L container. When you return later, you find that the equilibrium concentration of B is 0.30 M. What is the value of Kc for this reaction? A) 0.4 B) 1.8 C) 0.30 D) 0.56
Transcribed Image Text:16. Identify the correct expression for Kc for the reaction: H2 (g) + I2 (g) = 2 HI (g) [H2][l2] [HI]2 А) К. — B) K. = [HI]² [HI]? C) K. = [HI]? D) K = [H2] 17. For the reaction A(g) +B (g) = C (g), vou know that Kc = 51.0 at a certain temperature. What will happen to the value of Kc if you add more A to the equilibrium mixture? A) It will go up. B) It will go down. C) It will stay the same. D) It is impossible to predict how Kc would change. 18. You study the equilibrium reaction 2 A (aq) = B (aq) + C (aq). You place a 1.0 M solution of A into an empty 1.0 L container. When you return later, you find that the equilibrium concentration of B is 0.30 M. What is the value of Kc for this reaction? A) 0.4 B) 1.8 C) 0.30 D) 0.56
19. Oxygen (O2) and ozone (O3) form an equilibrium mixture according to the reaction: 3 02 (g) = 2 O3 (g) At equilibrium, you measure the partial pressure of the O2 to be 1.2 atm and the partial pressure of O3 to be 0.44 atm, What is the value for Kp of this reaction? A) 0.37 B) 2.7 C) 0.059 D) 0.11 20. Sulfur trioxide decomposes according to the reaction: 2 SO3 (g) = 2 SO2 (g) + O2 (g) A 1.0 L flask is filled with 1.3 mol SO3, 1.0 mol SO2, and 0.20 mol O2 and allowed to reach equilibrium. If the temperature is chosen so that Kc = 0.0050, how will the reaction shift to reach equilibrium? A) towards the products because Q > Kc B) towards the products because Q< Kc C) towards the reactants because Q > Kc D) towards the reactants because Q< Kc 21. According to the Bronsted-Lowry acid base theory, a base is: A) anything that gives up OH- in solution. B) a proton donor C) a proton acceptor D) an electron pair acceptor
Transcribed Image Text:19. Oxygen (O2) and ozone (O3) form an equilibrium mixture according to the reaction: 3 02 (g) = 2 O3 (g) At equilibrium, you measure the partial pressure of the O2 to be 1.2 atm and the partial pressure of O3 to be 0.44 atm, What is the value for Kp of this reaction? A) 0.37 B) 2.7 C) 0.059 D) 0.11 20. Sulfur trioxide decomposes according to the reaction: 2 SO3 (g) = 2 SO2 (g) + O2 (g) A 1.0 L flask is filled with 1.3 mol SO3, 1.0 mol SO2, and 0.20 mol O2 and allowed to reach equilibrium. If the temperature is chosen so that Kc = 0.0050, how will the reaction shift to reach equilibrium? A) towards the products because Q > Kc B) towards the products because Q< Kc C) towards the reactants because Q > Kc D) towards the reactants because Q< Kc 21. According to the Bronsted-Lowry acid base theory, a base is: A) anything that gives up OH- in solution. B) a proton donor C) a proton acceptor D) an electron pair acceptor
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