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

Question 1 of 15

2. What name is given to the movement of gases?

Question 2 of 15

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

Question 3 of 15

4. What will happen to the equilibrium position when the temperature is increased? Give a reason for your prediction. CO(g) + H₂O(g) ⇋ CO₂(g) + H₂(g) ΔH = –42 kJ mol⁻1

Question 4 of 15

5. For a reversible reaction to reach dynamic equilibria, where must the reaction take place?

Question 5 of 15

6. What is meant by the term endothermic?

Question 6 of 15

7. State the observation in the reaction between HCl(g) and NH₃(g)

Question 7 of 15

8. What is meant by the term activation energy?

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. In the thermal decomposition of calcium carbonate, we might expect 50g of calcium carbonate to produce 28g of calcium oxide. If instead only 24g of calcium oxide is produced, what is the percentage yield?

Question 10 of 15

11. Describe the chemical test for water

Question 11 of 15

12. What does this diagram represent?

Question 12 of 15

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

Question 13 of 15

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

Question 14 of 15

15. What does this symbol represent?

Question 15 of 15


 

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