1. What does this symbol represent?

Question 1 of 15

2. What does the symbol ΔH mean

Question 2 of 15

3. 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 3 of 15

4. What will happen to the equilibrium position when the pressure is increased? Give a reason for your prediction. CH₄(g) + H₂O(g) ⇋ CO(g) + 3H₂(g) ΔH = +210 kJ mol⁻1

Question 4 of 15

5. 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 5 of 15

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

Question 6 of 15

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

Question 7 of 15

8. Explain the effects of increasing the pressure of gases on the rate of a reaction in terms of particle collision theory

Question 8 of 15

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

Question 9 of 15

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

Question 10 of 15

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

Question 11 of 15

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

Question 12 of 15

13. What is a catalyst?

Question 13 of 15

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

Question 14 of 15

15. What is meant by the term exothermic?

Question 15 of 15


 

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