4.3.3 - Second-Order Reactions
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Practice Questions
Test your understanding with targeted questions
What is the rate equation for a second-order reaction involving two molecules of A?
💡 Hint: Use the definition of second-order reactions.
How does the half-life of a second-order reaction depend on the initial concentration?
💡 Hint: Think about how the formula for half-life is constructed.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the rate law for a second-order reaction involving two different reactants?
💡 Hint: Remember how different reactants interact in second-order kinetics.
True or False: The half-life for second-order reactions decreases as the initial concentration increases.
💡 Hint: Consider how the rate of reaction changes with different initial concentrations.
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Challenge Problems
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A sample of a second-order reaction at time zero contains A at 0.6 M. If after 4 seconds the concentration drops to 0.3 M, find the rate constant k.
💡 Hint: Use the integrated rate law to set up the calculation.
In a second-order reaction involving A + B → products, the system starts with [A]_0 = [B]_0 = 0.1 M. Calculate how long it would take for [A] to drop to 0.05 M if k = 3 M^-1 s^-1.
💡 Hint: Apply the correct values to the integrated rate law.
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