Reversible Reactions Practice Questions
Question 1
Q1. Knowledge Recall (1 mark)
Define a reversible reaction.
Question 2
Q2. Application (2 marks)
Explain why a catalyst speeds up a reversible reaction.
Question 3
Q3. Calculations (3 marks)
Calculate the value of Kc for the following reaction at equilibrium:
CO(g) + 2H2(g) <=> CH3OH(g)
[CO] = 0.1 mol/dm³, [H2] = 0.2 mol/dm³, [CH3OH] = 0.02 mol/dm³
Question 4
Q4. Knowledge Recall (2 marks)
State Le Chatelier's principle.
Question 5
Q5. Application (2 marks)
Predict the shift in equilibrium when carbon dioxide is added to the following reaction:
CaCO3(s) <=> CaO(s) + CO2(g)
Question 6
Q6. Calculations (3 marks)
Calculate the molarity of a solution of sulfuric acid (H2SO4) that has a pH of 3.0.
Question 7
Q7. Application (2 marks)
Explain why the Haber process is an example of a reversible reaction.
Question 8
Q8. Knowledge Recall (1 mark)
What is the name of the position in a reversible reaction where the forward and reverse reactions are occurring at the same rate?
Question 9
Q9. Calculations (4 marks)
A 0.5 mol/dm³ solution of hydrogen iodide (HI) is 20% dissociated at equilibrium.
Calculate the value of Kc for the following reaction:
2HI(g) <=> H2(g) + I2(g)
Question 10
Q10. Application (2 marks)
Identify one industrial application of reversible reactions.