Collision Theory

Last updated: 05/02/2020
WJEC A-Level Chemistry Unit 2.2 – Rates of reaction Collision Theory
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  1. Current
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  3. Answered

  1. What is the definition of the rate of a reaction?

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  2. What is the equation for the rate of a reaction?

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  3. What are the units for rate of a reaction?

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  4. What is the definition of initial rate?

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  5. Using a concentration-time graph, how can the initial rate be found?

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  6. How do you calculate a gradient?

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  7. What happens to the gradient within a concentration-time graph for a reactant as a reaction progresses?

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  8. What happens to the gradient within a concentration-time graph for a reactant as a reaction finishes?

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  9. Within a concentration-time graph, which axis does concentration lie on?

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  10. Within a concentration-time graph, which axis does time lie on?

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  11. When are the concentrations of reactants usually the highest during a reaction?

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  12. When are the concentrations of reactants usually the lowest during a reaction?

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  13. At what point is the rate of a reaction usually the fastest?

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  14. What happens to the rate of reaction when the temperature of a reaction is increased?

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  15. What happens to the rate of reaction when the pressure of a reaction with gaseous reactants is increased?

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  16. What happens to the frequencies of collisions between gaseous molecules in a reaction when the pressure is increased?

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  17. What happens to the rate of reaction when the concentration of a reaction is increased?

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  18. What happens to the frequencies of collisions between molecules in a reaction when the concentration is increased?

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  19. What happens to the rate of reaction when the surface area of a reaction is increased?

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  20. What happens to the rate of reaction when a catalyst is added to a reaction?

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