Practice Rate Law And Rate Constant (4.3) - Chapter 4: Chemical Kinetics

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6 sample questions

Question 1.
Define rate law in your own words.
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Think about how concentrations might impact speeds of reactions.
Question 2.
What does the rate constant (k) represent?
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Consider the constant's role in the rate equation.
3Question 3.
What does the rate law express?
- Only the temperature dependencies
- The relationship between the rate of reaction and concentrations of reactants
- The reaction completion time
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Think about what factors influence the speed of reactions.
4Question 4.
True or False: The orders of reaction are always equal to the coefficients of the balanced equation.
- True
- False
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Recall how orders are determined.
Question 5.
For a reaction governed by the rate law Rate = k[A]^2[B], how would you calculate the rate if [A] = 0.2 M and [B] = 0.5 M, and k = 3.0 M⁻²s⁻¹?
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Don't forget to square the concentration of [A]!
Question 6.
Calculate the effect on the reaction speed if the concentration of A doubles in a first-order reaction Rate = k[A]. What happens to the rate?
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Think about how first-order behavior works.

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