Question

1) The reaction below is exothermic

 2SO2 (g) + O2(g) ⇌ 2SO3(g) + heat

 Le Châtelier's Principle predicts that _______ will result in an increase in the number of moles of SO3 (g) in the reaction container. 

Which direction will the reaction shift: ? left or right

 A) increasing the volume of the container

 B) increasing the amount of SO2

 C) removing some oxygen

 D) increasing the temperature

 E) decreasing the pressure

 2) Consider the following reaction at equilibrium:

 2SO2 (g) + O2 (g) ⇌ 2SO3 (g) + heat ΔH = -99 kJ 

Le Châtelier's principle predicts that a(n) increase in temperature will result in _______ 

Which direction will the reaction shift: ? left or right

 A) an increase in the partial pressure of O2

 B) no changes in equilibrium partial pressures

 C) a decrease in the partial pressure of O2

 D) a(n) increase in Keg

 E) a decrease in the partial pressure of SO2

3) Consider the following reaction at equilibrium:

 2NH3 (8) N2(g) + 3H2(g) ΔH = +92.4 kJ 

Le Châtelier's principle predicts that removing N2 (g) to the system at equilibrium will result in _______ 

Which direction will the reaction shift: ? left or right

 A) a decrease in the concentration of H2

 B) an increase in the concentration of H2

 C) a lower partial pressure of H2

 D) removal of all of the H2

 E) an increase in the value of the equilibrium constant

4) For the endothermic reaction

 CaCO3(s) ⇌ Cao (s) + CO2 (g) 

Le Châtelier's principle predicts that _______  will result in an increase in the number of moles of CO2

 A) decreasing the temperature

 B) removing some of the CaCO3(s)

 C) increasing the temperature

 D) increasing the pressure

 E) none of the above

Answer 1