Practice Rate Expression And Rate Constant (3.2.2)

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6 sample questions

Question 1.
What is a rate expression?
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Think about how concentrations influence the speed of a reaction.
Question 2.
What are the units of the rate constant for a first-order reaction?
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Consider how long it takes for reactants to change.
3Question 3.
What does the rate constant (k) indicate in a reaction?
- The rate of reaction
- The proportionality constant
- The order of reaction
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Think about what role k plays in the rate law.
4Question 4.
True or False: The rate law can generally be derived from the balanced equation of a reaction.
- True
- False
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Consider variability in reaction conditions.
Question 5.
Given the reaction A + B -> C with initial concentrations of [A] = 1 mol L⁻¹ and [B] = 1 mol L⁻¹ and a rate constant k = 0.1 L mol⁻¹ s⁻¹, what is the initial rate of reaction?
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Use the rate expression carefully.
Question 6.
For a reaction with a k value showing strong dependence on temperature, explain why it is crucial to study this behavior in detail.
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Think about how heat influences molecular movement.

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