Practice Temperature Dependence Of Rate – Arrhenius Equation (4.8) - Chapter 4: Chemical Kinetics

Practice: Temperature Dependence of Rate – Arrhenius Equation

Lesson 4.8Chemical Kinetics

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9 questions

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3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the Arrhenius equation?
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Remember the components: k, A, Ea, R, and T.
Question 2.
What does activation energy (Ea) represent?
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Think about a barrier that needs to be overcome.
3Question 3.
What does the Arrhenius equation express?
- The relationship between pressure and volume
- The impact of temperature on reaction rate constants
- The concentration of reactants
- The volume of products
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Focus on how temperature influences reaction dynamics.
4Question 4.
True or False: Activation energy is the maximum energy needed for reaction.
- True
- False
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Think of activation energy as the threshold that needs to be crossed.
Question 5.
A chemist measures the rate constant of a reaction at 300 K as 1.5 x 10^-5 s^-1 and at 350 K as 5.0 x 10^-4 s^-1. Calculate the activation energy for this reaction.
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You will rearrange the equation for Ea and use values of R as 8.314 J/mol·K.
Question 6.
Why does understanding the temperature dependence of reaction rates matter in environmental science?
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Consider how temperature fluctuations may affect chemical processes in nature.

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