Practice Chemical Kinetics (3) - Chemical kinetics

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9 questions

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5 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.
Define average rate of a reaction.
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Think about measuring a value over a period.
Question 2.
What does the rate constant (k) represent?
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What connects rate and concentration?
3Question 3.
What is the definition of the average rate of reaction?
- Rate at a specific moment
- Rate over a time interval
- The speed of molecular movement
- None of the above
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Think about a speed measurement over a journey.
4Question 4.
True or False: A catalyst alters the activation energy required for a reaction.
- True
- False
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Think of a guide who helps you navigate a difficult path.
Question 5.
If a reaction's rate doubles with the doubling of reactant concentration, what is its order with respect to that reactant?
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Think about how the change in concentration affects the rate.
Question 6.
Using the Arrhenius equation, if the activation energy for a reaction is known, how would increasing the temperature affect the rate constant?
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Consider what happens to molecules at higher temperatures.

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