Practice Factors Affecting The Rate Of Reaction (4.2) - Chapter 4: Chemical Kinetics

Practice: Factors Affecting the Rate of Reaction

Lesson 4.2Chemical Kinetics

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9 questions

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2 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 effect does increasing concentration have on reaction rates?
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Think about how many particles are present.
Question 2.
Define a catalyst in the context of chemical reactions.
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What do we call substances that help speed up reactions?
3Question 3.
What is the effect of increasing the temperature on the rate of a reaction?
- Decreases the rate
- Has no effect
- Increases the rate
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Consider what happens to particles when they get more heat.
4Question 4.
True or False: Catalysts are consumed in the reactions they catalyze.
- True
- False
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Think about what happens to a catalyst after it speeds up a reaction.
Question 5.
Calculating the effect of a catalyst: A reaction without a catalyst takes 20 minutes. With a catalyst, it was seen to take only 5 minutes. How much faster did the reaction occur?
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Think about how many times faster the reaction was in comparison.
Question 6.
Analyzing a reaction: If you double the concentration of a reactant in a second-order reaction, how does it affect the rate?
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Consider the power to which concentration is raised in the rate equation.

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