Multiple choice

Which changes will increase the reaction rate of any chemical reaction?

  1. Increase concentration / decrease temperature

  2. decrease concentration / increase temperature

  3. decrease concentration / decrease temperature

  4. increase concentration / increase temperature
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Increasing the concentration of reactants increases collision frequency, and increasing temperature increases both collision frequency and energy, both of which accelerate reaction rates.

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