Part A
Compare the reaction Y ? Z to the reaction A ? B pictured below. Which reaction has the faster rate?
Match the words in the left column to the appropriate blanks in the sentences on the right.
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equal to
At t = 0 s, the number of Y particles is
the number of A particles.
less than
At t = 60 s, the number of the Z particles is
the number of B particles.
greater than
Therefore, the number of Y particles turned into Z particles is
the number of A
particles turned to B particles for the same amount of time.
Therefore, the rate of reaction Y ? Z is
the rate of the reaction A ? B.
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Part B
If each dot represents a concentration of 0.15 M, what is the rate of the reaction Y ? Z between 0 and 20 s?
Express your answer in moles per liter per second to two significant figures.
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M/s
Part C
If each dot represents a concentration of 0.15 M, what is the rate of the reaction Y ? Z between 40 and 60 s?
Express your answer in moles per liter per second to two significant figures.
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M/s
t = 0 s
t = 20 s
t = 40 s
t = 60 s
A ? B