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2 cards from this section. Quick, good the night before a test.
Define a rate law in your own words.
Consider what variables are included in the equation.
What are the units of the rate constant for a first-order reaction?
Think about how the rate and concentration relate for first order.
What does a rate law express?
Think about what factors control the speed of a reaction.
True or False: The units of the rate constant, k, are always the same.
Consider how the reaction order affects the units of k.
A chemical reaction has the following rate law: Rate = k [A]^2 [B]. If the concentration of A is doubled, what effect does this have on the rate of the reaction?
Consider how changing the concentration of a second-order reactant affects the rate.
In a reaction mechanism, Step 1 is much faster than Step 2, which is the rate-determining step. Explain how you would use the steady-state assumption to derive the overall rate law for the reaction.
What can you say about the concentration of intermediates at steady state?
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