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10. What effect do the listed changes have on the position of the equilibrium in the reaction of carbon with hydrogen? C + 2How → CHILE AH -18 kcal/mol (-75 kd/mol) A. Increasing temperature: A increasing the temperature shifts the equilibrium to the right, favoring, product B. Increasing the temperature shifts the equilibrium to the left, favoring reactants. B. Increasing pressure by decreasing volume: A B. Increasing the pressure shifts the equilibrium to the left, favoring reactants Increasing the pressure shifts the equilibrium to the right, favoring product C. Allowing CH, to escape continuously from the reaction vessel: A It shifts the equilibrium toward the left, favoring reactants. B. It shifts the equilibrium toward the right, favoring product. 11. What is meant by the term heat of reaction? A the difference in temperature between products and reactants B. the difference in bond energies between products and reactants C. the difference in heat energies between products and reactants What other name is a synonym for this term? A. entropy change B. potential change C. enthalpy change 12. Why do catalysts not alter the amounts of reactants and products present at equilibrium? A. Catalysts lower the height of the activation energy barrier for forward reaction by the same amount but don't change the equilibrium constant. B. Catalysts lower the height of the activation energy barrier for both forward and reverse reactions by the same amount but don't change the equilibrium constant. C. Catalysts lower the height of the activation energy barrier for reverse reaction by the same amount but don't change the equilibrium constant. 13. For the reaction: H2(g) + 12 (g) - 2HI(g) Equilibrium concentrations at 25 Care (H2) = 0.0510 mol/L., [12] 0.174 mol/L, and [HI] -0.507 mol/L. What is the value of K at 25°C?

Answer 1

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