# So 2g o 2g 2so 3g when 040 mole of so 2 and 060 mole

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11. 2SO 2(g) + O 2(g) 2SO 3(g) When 0.40 mole of SO 2 and 0.60 mole of O 2 are placed in an evacuated 1.00-liter flask, the reaction represented above occurs. After the reactants and the product reach equilibrium and the initial temperature is restored, the flask is found to contain 0.30 mole of SO 3 . Based on these results, the equilibrium constant, K c , for the reaction is: (A) 20 (B) 10 (C) 6.7 (D) 2.0 (E) 1.2 Answer: A 12. 2SO 3(g) 2SO 2(g) + O 2(g) After the equilibrium represented above is established, some pure O 2(g) is injected into the reaction vessel at constant temperature. After equilibrium is reestablished, which of the following has a lower value compared to its value at the original equilibrium?

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13. 2NO (g) + O 2(g) 2NO 2(g) H<0 Which of the following changes alone would cause a decrease in the value of K eq for the reaction represented above? 14. HC 2 H 3 O 2(aq) + CN - (aq) HCN (aq) + C 2 H 3 O 2 - (aq) The reaction represent above has an equilibrium constant equal to 3.7x10 4 . Which of the following can be concluded from this information? is 7.
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