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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define the rate of a chemical reaction.
💡 Hint: Think about what happens to reactants during the process.
Question 2
Easy
What does the symbol k represent in the rate law?
💡 Hint: It's part of the rate law equation.
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 unit of the rate constant k for a second-order reaction?
- s^-1
- M^-1 s^-1
- M^2 s^-1
💡 Hint: Think about how rates and changes in concentration relate.
Question 2
True or False: The order of a reaction is always equal to the coefficients in the balanced equation.
- True
- False
💡 Hint: Reflect on the foundation of rate laws.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A reaction follows first-order kinetics. If the half-life is 20 minutes, what will the concentration be after 60 minutes if we start with 1 M?
Calculate how many half-lives have passed.
💡 Hint: Think about how many times you need to halve the concentration.
Question 2
For the reaction A → products, the rate constant is measured at 0.5 M^-1 s^-1. If the initial concentration of A is 0.2 M, how long will it take for the concentration to drop to 0.1 M?
💡 Hint: Focus on rearranging the integrated rate equation to find time.
Challenge and get performance evaluation