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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What happens to reaction rates if the temperature decreases?
💡 Hint: Think about molecular movement.
Question 2
Easy
Define activation energy.
💡 Hint: Look at the threshold for reactions.
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
Which equation describes the relationship between temperature and the rate constant?
- A = B * T
- k = A e^{(-E_a / RT)}
- RT = kA
💡 Hint: Recall the formula we discussed.
Question 2
True or False: An increase in activation energy decreases the rate constant.
- True
- False
💡 Hint: Focus on the energy barrier concept.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A reaction has an activation energy of 75 kJ/mol. Calculate the rate constant at 298 K if the frequency factor is 1 x 10^12 s^-1.
💡 Hint: Convert activation energy to J and apply the Arrhenius formula carefully.
Question 2
If the rate constant at 300 K is 0.1 s^-1 and it doubles for every 10°C rise, what is the rate constant at 330 K?
💡 Hint: How many increments of 10°C in 30°?
Challenge and get performance evaluation