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Solved: Two gaseous reactants are allowed to react in a 1-L flask, and the reaction rate

Chapter 15, Problem 37P

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QUESTION:

Two gaseous reactants are allowed to react in a 1-L flask, and the reaction rate is measured. The experiment is repeated with the same amount of each reactant and at the same temperature in a 2-L flask (so the concentration of each reactant is less). What is likely to happen to the measured reaction rate in the second experiment compared to the first?

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QUESTION:

Two gaseous reactants are allowed to react in a 1-L flask, and the reaction rate is measured. The experiment is repeated with the same amount of each reactant and at the same temperature in a 2-L flask (so the concentration of each reactant is less). What is likely to happen to the measured reaction rate in the second experiment compared to the first?

ANSWER:

Step 1 of 2

Notice that there are only changes to the reaction vessel volume. The other conditions are constant, such as temperature and pressure (although pressure does not affect this scenario much). Now, the volume is doubled as the reaction takes place in the second experiment, so the concentration of both gases is decreased to half the concentration (if the amount of both gases taken is the same in both flasks).

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