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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is required for a reaction to occur according to collision theory?
💡 Hint: Think about what happens before molecules can transform.
Question 2
Easy
Define activation energy in your own words.
💡 Hint: Consider it as a threshold or barrier that must be overcome.
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 collision theory primarily concerned with?
- Only collisions
- Collisions and reaction pathways
- Collision frequencies only
💡 Hint: Think about the broader context of what happens after collisions.
Question 2
True or False: Activation energy can be lowered by the presence of a catalyst.
- True
- False
💡 Hint: Consider how catalysts affect reaction dynamics.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A chemical reaction follows the Arrhenius equation. If the rate constant at temperature 300K is observed to be 0.5 s⁻¹ and at 310K is 0.8 s⁻¹, determine the activation energy of the reaction.
💡 Hint: Remember to convert the gas constant R into consistent units when performing calculations.
Question 2
A researcher finds that the activation energy for a reaction is 75 kJ/mol. If the temperature is increased from 300K to 320K, predict how the reaction rate changes.
💡 Hint: Think about the effect of a small temperature increase on collision energy and rates.
Challenge and get performance evaluation