Q1. In the reaction 2SO2(g) + O2(g) ⇌ 2SO3(g), what will happen if the volume of the container is increased? (2023)
Solution:
According to Le Chatelier's principle, increasing the volume of the container decreases the pressure. The equilibrium will shift towards the side with more moles of gas, which is the left side (2 moles of SO2 + 1 mole of O2).
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Q2. For the exothermic reaction: N2(g) + 3H2(g) ⇌ 2NH3(g), what will happen if the temperature is increased? (2023)
Solution:
According to Le Chatelier's principle, increasing the temperature of an exothermic reaction shifts the equilibrium to the left, favoring the reactants.
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Q3. In a reversible reaction, if the concentration of products increases, what happens to the equilibrium position? (2021)
Solution:
According to Le Chatelier's principle, if the concentration of products increases, the equilibrium will shift to the left to counteract the change.
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Q4. For the reaction 2SO2(g) + O2(g) ⇌ 2SO3(g), what happens to the equilibrium position if SO3 is removed from the system? (2023)
Solution:
Removing SO3 will decrease its concentration, causing the system to shift to the right to produce more SO3 in order to re-establish equilibrium, according to Le Chatelier's principle.
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Q5. In a reversible reaction at equilibrium, if the temperature is increased, what will happen to the equilibrium position if the reaction is exothermic? (2023)
Solution:
For an exothermic reaction, increasing the temperature shifts the equilibrium position to the left, favoring the reactants, as the system tries to absorb the added heat.
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Q6. For the reaction N2(g) + 3H2(g) ⇌ 2NH3(g), what happens to the equilibrium if the volume of the container is decreased? (2020)
Solution:
Decreasing the volume increases the pressure, and according to Le Chatelier's principle, the equilibrium will shift to the side with fewer moles of gas, which is the right side in this case.
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Q7. In a reversible reaction, if the concentration of products increases, what happens to the equilibrium position? (2021) 2021
Solution:
According to Le Chatelier's principle, if the concentration of products increases, the equilibrium will shift to the left to counteract the change.
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Q8. For the reaction 2SO2(g) + O2(g) ⇌ 2SO3(g), what happens to the equilibrium if the volume of the container is decreased? (2022)
Solution:
Decreasing the volume increases the pressure, and according to Le Chatelier's principle, the equilibrium will shift towards the side with fewer moles of gas, which is the right side (2 moles of SO3).
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Q9. If the concentration of a reactant is increased in a system at equilibrium, what will happen according to Le Chatelier's principle?
Solution:
According to Le Chatelier's principle, if a change is made to a system at equilibrium, the system will adjust to counteract that change. Increasing the concentration of a reactant will shift the equilibrium to the right, favoring the formation of products.
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Q10. Which of the following factors does NOT affect the position of equilibrium? (2023) 2023
Solution:
A catalyst speeds up the rate of reaching equilibrium but does not affect the position of equilibrium itself.
