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Chemical Equilibrium

Q. Consider the following reactions and their equilibrium constants at 300, K. PCI5(g) - 1/4 P4(g) + 5/2 Cl2(g); Kc = 2.10.10-22 1/4 P4(g) + 3/2 C12(g) - PC13(9); Kc = 9.33.1026 Calculate Kc for PCI5(g) PCI3(g) + Cl2(g) at the same temperature.

Solved • Jul 5, 2019

Chemical Equilibrium

Q. Consider the following reaction. N2(g) + 02(g) - 2 NO(g); Kc = 6.8.10-4 at 2137 K (a) What is the value of Kc for the reaction 2 NO(g) = N2(g) + 02(g) at the same temperature? (b) What is the value of Kc for the reaction 1/2 N2(g) + 1/2 02(g) NO(g) at the same temperature? (c) Does the equilibrium in (a) favor the reactant or the products? reactant products (d) Does the equilibrium in (b) favor the reactants or the product? reactants product (e) Consider the original reaction. If pN2 = 0.307 atm, p02 = 2.30 atm, and pN0 = 0.125 atm, is the system at equilibrium? If not, will the system shift to the left or to the right in order to achieve equilibrium? The system______at equilibrium; therefore, the system _______

Solved • Jul 5, 2019

Chemical Equilibrium

Q. Please use the values in the resources listed below instead of the textbook values. Convert the values of Kc to values of Kp or the values of K to values of K. (a) 2 S02(g) + 02(g) 2 S03(g)Kc = 7.90x 103 at 480.°C (b) H20(/) ‘=' H20(g)K = 4.3 at 55°C (c) N2(g) + 3 H2(g) ‘=" 2 NH3(g)K = 6.84x 10-6 at 290.°C (d) Cl2(g) + Br2(g) ‘=' 2 BrCl(g)K = 8.1 at 25°C

Solved • Jul 5, 2019

Chemical Equilibrium

Q. The value of Keq for the following reaction is 0.25: SO2 (g) + NO2 (g) ⇌ SO3 (g) + NO (g) The value of Keq at the same temperature for the reaction below is __________. 2SO2 (g) + 2NO2 (g) ⇌ 2SO3 (g) + 2NO (g) A) 0.063 B) 0.50 C) 0.25 D) 16 E) 0.12

Solved • Jul 2, 2019

Chemical Equilibrium

Q. Given the following reaction at equilibrium, if Kp = 1.05 at 250.0°C, Kc = __________. PCl5 (g) ⇌ PCl3 (g) + Cl2 (g) A) 2.45 x 10^-2 B) 3.90 x 10^-6 C) 45.0 D) 42.9 E) 1.05

Solved • Jul 2, 2019

Chemical Equilibrium

Q. The value of Keq for the equilibrium H2 (g) + I2 (g) ⇌ 2 HI (g) is 794 at 25°C. What is the value of Keq for the equilibrium below? 1/2 H2 (g) + 1/2 I2 (g) ⇌ HI (g) A) 397 B) 0.0013 C) 28 D) 0.035 E) 1588

Solved • Jul 2, 2019

Chemical Equilibrium

Q. For which one of the following reactions will Kc =Kp? A) 2 O3(g) ⇌ 3 O2(g) B) ZnO(s) + CO(g) ⇌ Zn(s) + CO2(g) C) CO(g) + 2 H2(g) ⇌ CH3OH(g) D) COCl2(g) ⇌ CO(g) + Cl2(g)

Solved • Jul 1, 2019