4 - Rate Laws and Reaction Mechanisms
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Practice Questions
Test your understanding with targeted questions
Define a rate law in your own words.
💡 Hint: Consider what variables are included in the equation.
What are the units of the rate constant for a first-order reaction?
💡 Hint: Think about how the rate and concentration relate for first order.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does a rate law express?
💡 Hint: Think about what factors control the speed of a reaction.
True or False: The units of the rate constant, k, are always the same.
💡 Hint: Consider how the reaction order affects the units of k.
1 more question available
Challenge Problems
Push your limits with advanced challenges
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?
💡 Hint: 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.
💡 Hint: What can you say about the concentration of intermediates at steady state?
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