Temperature and Reaction Rate Worksheet

Question 1

When temperature rises and the pathway is unchanged, what generally happens to the fraction of reactant particles with enough energy to react?

1. It decreases.
2. It increases.
3. It stays exactly the same.
4. It immediately becomes zero.

Question 2

Explain why a reaction can run faster at higher temperature even though its activation energy stays the same.

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Question 3

Two trials make the same fixed amount of product. Trial A reaches that amount in 20 s and trial B in 40 s. Which trial has the greater average production rate over its measured interval?

1. Trial A
2. Trial B
3. Both are equal.
4. The shorter time shows a smaller rate.

Question 4

Explain why initial concentration should be held constant when testing the effect of temperature on rate.

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Question 5

Which trial has the greatest average product formation rate?

1. P
2. Q
3. R
4. All three are equal.

Question 6

Calculate the average product formation rate in Q in mol/s.

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Question 7

How does the average rate in R compare with that in P?

1. It is half as large.
2. It is the same.
3. It is twice as large.
4. It is four times as large.

Question 8

Use collision theory to explain the measured time difference between P and R.

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