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

Question 1 of 15

2. What will happen to the equilibrium position when we increase temperature? Give a reason for your prediction. 2A (s) + B (g) ⇋ C (g) + D (g) (-∆H)

Question 2 of 15

3. What does this symbol represent?

Question 3 of 15

4. What colour is hydrated copper (II) sulfate?

Question 4 of 15

5. One feature of dynamic equilibrium is that there is no overall change in concentrations. What is the other?

Question 5 of 15

6. What is meant by the term endothermic?

Question 6 of 15

7. State the expression for calculating % yield.

Question 7 of 15

8. Explain the effects of increasing the surface area of a solid on the rate of a reaction in terms of particle collision theory

Question 8 of 15

9. In a calorimetry experiment to investigate the heat energy released by the combustion of ethanol, why should the water in the calorimeter be stirred?

Question 9 of 15

10. Write a chemical equation for the reaction between hydrogen chloride and ammonia

Question 10 of 15

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

Question 11 of 15

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

Question 12 of 15

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

Question 13 of 15

14. What does the symbol ΔH mean

Question 14 of 15

15. What happens if two particles collide with less than the activation energy

Question 15 of 15


 

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