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Rates, equilibrium and pH

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Question 3

Which statement(s) explain(s) why the rate of a chemical reaction increases when a catalyst is added?

  1. The frequency of collisions between reactant molecules increases.
  2. The catalyst provides an alternative reaction pathway with a lower activation energy.
  3. A greater proportion of molecules have energy greater than or equal to the activation energy.

1, 2 and 3

Only 1 and 2

Only 2 and 3

Only 1

Rates, equilibrium and pH Questions

  1. A Level
  2. /Chemistry
  3. /Rates, equilibrium and pH