GCSE Chemistry – Reversible reactions and equilibrium

Last updated: 26/05/2020
Edexcel GCSE Science – Combined science foundation Extracting metals and equilibria GCSE Chemistry – Reversible reactions and equilibrium

Learning Objectives

-I can use symbols to represent a reversible reaction
-I can describe what happens to ammonium chloride upon heating and cooling
-I can describe what happens to the energy in a reversible reaction, where one direction is exothermic and the other endothermic
-I can define the term dynamic equilibrium

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  1. What is the definition of a reversible reaction?

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  2. What is the definition of an irreversible reaction?

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  3. What arrow is used to signify a reversible reaction?

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  4. What arrow is used to signify an irreversible reaction?

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  5. Which of the following statements is true?

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  6. What type of compound is ammonium chloride?

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  7. What happens to ammonium chloride when heated?

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  8. What colour is ammonium chloride?

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  9. What type of reaction takes place when you heat ammonium chloride?

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  10. What type of reaction takes place when you heat ammonium chloride?

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  11. What product is formed during the heating of ammonium chloride?

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  12. What product is formed during the heating of ammonium chloride?

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  13. What product is formed during the reverse reaction of the thermal decomposition of ammonium chloride?

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  14. What type of compound is the ammonia produced in the decomposition of ammonium chloride?

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  15. What type of compound is the hydrochloric acid produced in the decomposition of ammonium chloride?

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  16. Write the equation for the decomposition of ammonium chloride.

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  17. Write the backwards equation for the decomposition of ammonium chloride.

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  18. Write the equation, as a reversible one, for the decomposition of ammonium chloride.

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  19. A reversible reaction has an exothermic backward reaction, what energy change will take place for the forward reaction?

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  20. A reversible reaction has an endothermic backward reaction, what energy change will take place for the forward reaction?

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  21. What is the definition of a closed system?

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  22. What is the definition of dynamic equilibrium?

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  23. A reversible reaction has an exothermic forward reaction, what will its backward reaction be?

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  24. A reversible reaction has an endothermic forward reaction, what will its backward reaction be?

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  25. A reversible reaction has an exothermic forward reaction, what energy change will take place?

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