EquilibriumQuest1

# EquilibriumQuest1 - 1/2 H 2(g 1/2 I 2(g HI(g 6 At 697 °C...

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Chemical Equilibrium Questions 1 1) Write the equilibrium expression for each of the following reactions: a) N 2 (g) + 3 H 2 (g) 2 NH 3 (g) b) 2 H 2 (g) + O 2 (g) 2 H 2 O (g) c) NH 3 (g) + 3 H 2 O (g) NH 4 + (aq) + OH - 2) Now write the equilibrium expressions for the reverse reaction for each of the above reactions. 3) Which of the following two reactions would tend to proceed farthest to completion when they reach equilibrium? a) 2NO (g) + O 2 (g) 2 NO 2 (g) K eq = 3.4 x 10 3 b) 4NH 3 (g) + 5O 2 (g) 4NO (g) + 6H 2 O (g) K eq = 5 x 10 5

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4) Which of the following reactions would tend to proceed farthest to completion when they reach equilibrium? a) 2HBr (g) H 2 (g) + Br 2 (g) K c = 7 x 10 -20 b) Si (s) + O 2 (g) SiO 2 (s) K c = 2 x 10 142 c) C 2 H 4 (g) + H 2 (g) C 2 H 6 (g) K c = 1.2 x 10 19 5) At 500 °K, the equilibrium constant is 155 for H 2 (g) + I 2 (g) 2HI (g) Calculate the equilibrium constant for
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Unformatted text preview: 1/2 H 2(g) + 1/2 I 2(g) HI (g) 6) At 697 °C, the equilibrium constant is 6.81 for 2SO 2(g) + O 2(g) 2SO 3(g) Calculate the equilibrium constant for 2SO 3(g) 2SO 2(g) + O 2(g) 7) Some ammonia is sealed in a container and allowed to equilibrate at a particular temperature. The reaction is endothermic. 2NH 3(g) N 2(g) + 2H 2(g) In which direction will reaction occur a) if additional ammonia is added to the system? b) if additional hydrogen is added to the system? c) if the volume of the container is decreased? d) if the temperature is decreased? e) if argon is added to the system so that the total pressure in the container increases at constant volume?...
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