4.5 - Molecularity of a Reaction
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Practice Questions
Test your understanding with targeted questions
What is molecularity?
💡 Hint: Think about how many particles are involved in a single step of a reaction.
Can molecularity ever be a fraction?
💡 Hint: Remember, how we count particles!
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the highest value molecularity can take?
💡 Hint: Remember, what's the maximum for a simple step?
True or False: Molecularity can be a fraction.
💡 Hint: Think about how we count different species.
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Challenge Problems
Push your limits with advanced challenges
Given the reaction 2A + B → 3C, identify the molecularity of each step if the mechanism is composed of two elementary steps, the first is A + B → D (slow) and D → C (fast). What are the implications for the reaction order?
💡 Hint: Identify molecularities first; then look at the slower step.
Discuss why a reaction featuring a termolecular mechanism might show a slower rate compared to a bimolecular mechanism, even with similar concentrations.
💡 Hint: Think about the probability of particle collisions.
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