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Checking a Reaction With a Steady Intermediate 4 questions
Checking a Reaction With a Steady Intermediate
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A reaction display changes A into an intermediate B and then changes B into product C. Each step changes one particle into one particle. The container is sealed and the display counts all three forms. C does not change into another form.
Question 1
Which count stays the same from 5 to 15 seconds?
- A only
- B only
- C only
- All three
Question 2
Use the graph to find how many particles enter B from A and how many leave B for C from 5 to 10 seconds.
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A repeat follows the graph through 10 seconds. Then the container is cooled. At 15 seconds the repeat contains two A, four B, and six C particles.
Question 3
A student says cooling made no difference because the count of B at 15 seconds was still four. Use both trials to compare the amounts that changed in each step from 10 to 15 seconds.
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Question 4
The cooled container remains sealed until all A and B eventually become C. Predict the final C count and explain how the slower steps affect the amount at 15 seconds and the final amount.
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