Answer:
The answer is: It will shift the equilibrium toward the reactants.
Step-by-step explanation:
For the given questions related to chemical equilibrium and Le Châtelier's principle, here are the answers:
Question 1: How will the reaction be affected if the pressure on the system is decreased?
The answer is: It will shift toward the side with fewer moles of gas, which is the reactant side. Therefore, the correct option is: "It will shift toward the reactant side as there are a greater number of moles of gas on the reactant side."
Question 2: According to Le Châtelier's principle, an increase in temperature will shift the equilibrium position toward the products in an endothermic reaction.
The answer is: True. An increase in temperature favors the endothermic reaction, so the equilibrium will shift toward the products.
Question 3: Match the action to the effect on the equilibrium position for the reaction N2(g) + 3H2(g) ⇌ 2NH3(g).
The correct matching is:
Decreasing the pressure: Shift to the left (A)
Adding hydrogen gas: Shift to the right (B)
Adding a catalyst: No effect (C)
Question 4: What change would shift the equilibrium system to the left?
The correct option is: Removing some of gas C from the system.
Question 5: What stress would shift the equilibrium position of the following system to the left? N2O3(g) ⇌ NO(g) + NO2(g); ΔH is negative.
The correct option is: Decreasing the concentration of N2O3.
Question 6: Nitrogen dioxide gas is dark brown in color and remains in equilibrium with dinitrogen tetroxide gas, which is colorless. 2NO2(g) ⇌ N2O4(g). When a light brown colored mixture of the two gases at equilibrium was moved from room temperature to a higher temperature, the mixture turned dark brown in color. Which of the following conclusions about this equilibrium mixture is true?
The correct conclusion is: This reaction is endothermic because the system shifted to the right on heating.
Question 7: According to Le Châtelier's principle, how will a decrease in concentration of a reactant affect the equilibrium system?