1. What does the symbol ⇌ mean?

Question 1 of 15

2. With how much energy must two particles collide for a reaction to occur?

Question 2 of 15

3. What does this diagram represent?

Question 3 of 15

4. State and explain how increasing temperature affects the diffusion of a gas

Question 4 of 15

5. In a sealed container, a reversible reaction can reach a state of ______________________________

Question 5 of 15

6. Explain the effects of increasing the temperature on the rate of a reaction in terms of particle collision theory

Question 6 of 15

7. Explain why experimental values of enthalpy change differ from theoretical values

Question 7 of 15

8. What colour is anhydrous copper (II) sulfate?

Question 8 of 15

9. The addition of water to anhydrous copper sulfate can be used to test for the presence of water. The reaction is reversible. What is the word equation? Describe the colour change.

Question 9 of 15

10. What type of substance speeds up a chemical reaction but is chemically unchanged at the end of the reaction?

Question 10 of 15

11. What is meant by the term exothermic?

Question 11 of 15

12. State the expression for calculating % yield.

Question 12 of 15

13. What will happen to the yield of CH₃OH when the temperature is increased? Give a reason for your prediction. CO(g) + 2H₂(g) ⇋ CH₃OH(g) ΔH = –91 kJ mol⁻1

Question 13 of 15

14. State two features of a reaction that is in dynamic equilibrium

Question 14 of 15

15. Why a catalyst does not affect the position of equilibrium in a reversible reaction?

Question 15 of 15