Practice Molecularity and Elementary Steps - 4.5 | Unit 6: Chemical Kinetics | IB Grade 11: Chemistry
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4.5 - Molecularity and Elementary Steps

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

Define molecularity.

💡 Hint: Think about how many molecules are actually reacting.

Question 2

Easy

What is an elementary step in a reaction?

💡 Hint: Consider each step in a chemical 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 molecularity of the reaction A + B → products?

  • Unimolecular
  • Bimolecular
  • Termolecular

💡 Hint: Count how many reactants are present.

Question 2

True or False: A termolecular reaction is common in chemical kinetics.

  • True
  • False

💡 Hint: Consider how difficult it is for three particles to collide at once.

Solve 2 more questions and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Devise a hypothetical reaction mechanism that includes at least one unimolecular and one bimolecular step. Then, derive the overall rate law.

💡 Hint: Identify the rate-determining step before combining rate laws.

Question 2

Discuss why understanding the molecularity of steps helps in designing efficient catalysts in industrial chemical processes.

💡 Hint: Link molecularity to collision theory for better catalyst design.

Challenge and get performance evaluation