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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the rate equation for a second-order reaction involving two molecules of A?
💡 Hint: Use the definition of second-order reactions.
Question 2
Easy
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.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the rate law for a second-order reaction involving two different reactants?
- Rate = k[A]²
- Rate = k[A][B]
- Rate = k[A]³
💡 Hint: Remember how different reactants interact in second-order kinetics.
Question 2
True or False: The half-life for second-order reactions decreases as the initial concentration increases.
- True
- False
💡 Hint: Consider how the rate of reaction changes with different initial concentrations.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
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.
Question 2
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.
Challenge and get performance evaluation