The reaction rate almost gets doubled for 10°C rise in temperature. This is due to the fact that the_________________?
Correct answer: B. Fraction of molecules having threshold energy increases
- A. Increased temperature reduces the activation energy
- B. Fraction of molecules having threshold energy increases
- C. Collision frequency increases
- D. Value of threshold energy decreases
Explanation
From the Arrhenius equation, increasing temperature raises the fraction of molecules whose energy exceeds the activation or threshold energy. This greatly increases the number of effective collisions and can approximately double the rate for a 10°C rise.
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