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61) Consider the following reaction at equilibrium. What effect will increasing the pressure of the reaction mixture have on the system? 2 H2S(g) + 3 O2(g) ? 2 H2O(g) + 2 SO2(g) A) The reaction will shift to the right in the direction of products. B) No effect will be observed. C) The reaction will shift to the left in the direction of reactants. D) The equilibrium constant will decrease. E) The equilibrium constant will increase. 62) Consider the following reaction at equilibrium. What effect will adding 1 mole of Ar to the reaction mixture have on the system? 2 H2S(g) + 3 O2(g) ? 2 H2O(g) + 2 SO2(g) A) The reaction will shift to the right in the direction of products. B) No effect will be observed. C) The reaction will shift to the left in the direction of reactants. D) The equilibrium constant will decrease. E) The equilibrium constant will increase. 63) Consider the following reaction at equilibrium. What effect will adding some C have on the system? CO2(g) + C(graphite) ? 2 CO(g) A) No effect will be observed since C is not included in the equilibrium expression. B) The equilibrium constant will decrease. C) The reaction will shift to the left in the direction of reactants. D) The equilibrium constant will increase. E) The reaction will shift to the right in the direction of products. 64) Consider the following reaction at equilibrium. What effect will adding CO2 have on the system? CO2(g) + C(graphite) ? 2 CO(g) A) No effect will be observed since CO2 is not included in the equilibrium expression. B) The equilibrium constant will decrease. C) The reaction will shift to the left in the direction of reactants. D) The equilibrium constant will increase. E) The reaction will shift to the right in the direction of products. 65) Consider the following reaction at equilibrium. What effect will reducing the volume of the reaction mixture have on the system? CuS(s) + O2(g) ? Cu(s) + SO2(g) A) The equilibrium constant will decrease. B) No effect will be observed. C) The reaction will shift to the right in the direction of products. D) The equilibrium constant will increase. E) The reaction will shift to the left in the direction of reactants. 66) Consider the following reaction at equilibrium. What effect will increasing the pressure of the reaction mixture have on the system? CuS(s) + O2(g) ? Cu(s) + SO2(g) A) The equilibrium constant will decrease. B) No effect will be observed. C) The reaction will shift to the right in the direction of products. D) The equilibrium constant will increase. E) The reaction will shift to the left in the direction of reactants. 67) Consider the following reaction at equilibrium. What effect will reducing the volume of the reaction mixture have on the system? Xe(g) + 2 F2(g) → XeF4(g) A) The reaction will shift to the left in the direction of reactants. B) The equilibrium constant will increase. C) No effect will be observed. D) The reaction will shift to the right in the direction of products. E) The equilibrium constant will decrease. 68) Consider the following reaction at equilibrium. What effect will reducing the pressure of the reaction mixture have on the system? Xe(g) + 2 F2(g) → XeF4(g) A) The reaction will shift to the left in the direction of reactants. B) The equilibrium constant will increase. C) No effect will be observed. D) The reaction will shift to the right in the direction of products. E) The equilibrium constant will decrease. 69) Consider the following reaction at equilibrium. What effect will increasing the temperature have on the system? Fe3O4(s) + CO(g) ? 3 FeO(s) + CO2(g)ΔH°= +35.9 kJ A) The reaction will shift to the left in the direction of reactants. B) The equilibrium constant will increase. C) The equilibrium constant will decrease. D) No effect will be observed. E) The reaction will shift to the right in the direction of products. 70) Consider the following reaction at equilibrium. What effect will decreasing the temperature have on the system? CO2(g) + 2 H2O(l) ? CH4(g) + 2 O2(g)ΔH° = +890 kJ A) The reaction will shift to the left in the direction of reactants. B) The equilibrium constant will decrease. C) The equilibrium constant will increase. D) The reaction will shift to the right in the direction of products. E) No effect will be observed. 71) Consider the following reaction at equilibrium. What effect will increasing the temperature have on the system? C3H8(g) + 5 O2(g) ? 3 CO2(g) + 4 H2O(l)ΔH° = -2220 kJ A) The reaction will shift to the right in the direction of products. B) The reaction will shift to the left in the direction of reactants. C) The equilibrium constant will increase. D) The equilibrium constant will decrease. E) No effect will be observed. 72) Consider the following reaction at equilibrium. What effect will reducing the volume have on the system? C3H8(g) + 5 O2(g) ? 3 CO2(g) + 4 H2O(l)ΔH° = -2220 kJ A) The reaction will shift to the right in the direction of products. B) The reaction will shift to the left in the direction of reactants. C) The equilibrium constant will increase. D) The equilibrium constant will decrease. E) No effect will be observed. 73) Consider the following reaction at equilibrium. What effect will reducing the pressure have on the system? C3H8(g) + 5 O2(g) ? 3 CO2(g) + 4 H2O(l)ΔH° = -2220 kJ A) The reaction will shift to the right in the direction of products. B) The reaction will shift to the left in the direction of reactants. C) The equilibrium constant will increase. D) The equilibrium constant will decrease. E) No effect will be observed.

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