Why Does Temperature Affect the Rate of a Reaction

question 42

Multiple Choice

Why does temperature affect the rate of a reaction?
I. There are more total collisions among reactant molecules at a higher temperature.
II. Each collision is more energetic at higher temperatures.
III. The fraction of collisions with the proper orientation increases at higher temperatures.

• A) I only
• B) II only
• C) III only
• D) I and II
• E) All of these.

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