Practice Determining Activation Energy From Two Temperatures (3.5.1)

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6 sample questions

Question 1.
What does activation energy represent?
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Think about the energy needed to start a reaction.
Question 2.
What is the relationship between temperature and reaction rate according to the Arrhenius equation?
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Consider the kinetic energy of molecules.
3Question 3.
What does activation energy (Ea) signify in a chemical reaction?
- Energy required to form products
- Energy required to initiate a reaction
- Energy released during the reaction
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Consider the barrier that must be overcome for conversion.
4Question 4.
True or False: A higher activation energy leads to a faster reaction rate.
- True
- False
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Think about energy vs. speed.
Question 5.
You measure k1 = 0.5 s⁻¹ at 290 K and k2 = 1.0 s⁻¹ at 310 K. Calculate the activation energy Ea.
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Convert T1 and T2 to Kelvin if needed and check your logs.
Question 6.
Compare the effects of temperature changes on reactions with low vs. high activation energy.
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Consider energy distribution and collision theory.

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