1.
A) Le Châtelier’s principle B) Boyle’s law C) Charles’s law D) Dalton’s law 2.
A) only more H2 O to form B) only more CO to form C) more H2 O and CO to form D) only more CO2 to form 3.
2 (g) + O2 (g) → 2SO3 (g) at equilibrium, the removal of O2 would cause _______________.A) the concentration of SO2 to increase, and the concentration of SO3 to increase B) the concentration of SO2 to increase, and the concentration of SO3 to decrease C) the concentration of SO2 to decrease, and the concentration of SO3 to increase D) the concentration of SO2 to decrease, and the concentration of SO3 to decrease 4.
2 (g) + O2 (g) → 2SO3 (g) at equilibrium, what will be the effect on the net amount of SO3 present if the volume of the container is increased?A) The concentration of SO3 will increase. B) The concentration of SO3 will decrease. C) The concentration of SO3 will remain the same. D) This question cannot be answered without knowing the value of Keq. 5.
2 (g) + O2 (g) → 2SO3 (g) + heat, at equilibrium, what will be the effect on the net amount of SO3 present if the temperature of the container is increased?A) The concentration of SO3 increases. B) The concentration of SO3 decreases. C) The concentration of SO3 remains the same. D) This question cannot be answered without knowing the value of Keq. 6.
2 (g) + ½O2 (g) → SO3 (g), ΔH° = -1.6 × 102 kJ for the forward reaction. To increase the yield of SO3 , the reaction should be run at ________.A) high pressure and high temperature B) high pressure and low temperature C) low pressure and high temperature D) low pressure and low temperature 7.
2 (g) + Cl2 (g) → 2HCl(g) + heat, what will be the effect on the equilibrium constant, K eq , if the pressure of the vessel is decreased at constant temperature?A) K eq increasesB) K eq decreasesC) K eq does not changeD) The question cannot be answered without knowing the initial value of K eq . 8.
2 (g), which of the following will shift the reaction to the left?A) add a catalyst B) heat the reaction vessel C) decrease the volume of the container D) add more NOCl 9.
2 (g) + 2H2 O(g) + heat → 4HCl(g) + O2 (g), which of the following will shift the equilibrium to produce more HCl?A) add more Cl2 B) lower the temperature of the reaction C) decrease the volume of the reaction vessel D) add more O2 10.
3 (s) + 2H3 O+ (aq) → Ca2+ (aq) + 3H2 O(l) + CO2 (g)A) add base to neutralize the H3 O+ B) add more Ca2+ to the mixture C) conduct the experiment in an open container D) add CO2 to the mixture
