Practice Collision Frequency in the Gas Phase - 3.2.2 | Unit 6: Chemical Kinetics | IB Grade 11: Chemistry
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3.2.2 - Collision Frequency in the Gas Phase

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

Define collision frequency in your own words.

💡 Hint: Think about how often the molecules would bump into each other.

Question 2

Easy

What does collision cross-section refer to?

💡 Hint: Consider it as the 'target' area during a reaction.

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 definition of collision frequency?

  • It is the number of reactions completed.
  • It is the number of collisions over a period of time.
  • It measures concentration of reactants.

💡 Hint: Think about how often molecules actually hit one another.

Question 2

True or False: A larger collision cross-section leads to a higher probability of collisions occurring.

  • True
  • False

💡 Hint: Consider the 'target' idea.

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Challenge Problems

Push your limits with challenges.

Question 1

Calculate the collision frequency for two gases A and B with densities of 0.5 mol/L and 0.3 mol/L and a collision cross-section of 1.0 × 10^-10 m² at room temperature (298 K). Use the provided formula.

💡 Hint: Remember to calculate the reduced mass before using the equation.

Question 2

Explore how changing the concentration of gas A from 0.5 mol/L to 1.0 mol/L affects collision frequency without changing gas B concentration.

💡 Hint: Revisit the basic principle of collision frequency in terms of concentration change.

Challenge and get performance evaluation