Practice Heterogeneous Catalysis: Surface Reactions (6.4) - Unit 6: Chemical Kinetics

Practice: Heterogeneous Catalysis: Surface Reactions

Lesson 6.4Unit 6: Chemical Kinetics

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9 questions

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3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is heterogeneous catalysis?
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Think about different phases in a reaction.
Question 2.
Name one key component of the Langmuir model.
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Consider what happens before the reaction takes place.
3Question 3.
Which statement best describes heterogeneous catalysis?
- Reactions occur in the same phase as the catalyst.
- Reactions occur at the interface of different phases.
- Reactions only involve liquids.
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Think about how phases interact in catalysis.
4Question 4.
True or False: The rate-determining step is always the first step in a reaction mechanism.
- True
- False
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Remember, it's about speed, not order.
Question 5.
If the adsorption constants K_A and K_B have values of 0.5 and 0.2 respectively, calculate the rate of reaction if the partial pressures of A and B are both 1 atm.
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You'll need to organize your rate law into a form where k can be evaluated or known.
Question 6.
Discuss how increasing the catalyst's surface area could improve reaction rates in the Haber-Bosch process. Include examples.
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Look at how collisions and availability of sites intersect.

5 more questions in this section. Enroll free to practise them all.