Practice Temperature Dependence Of The Rate Of A Reaction (3.4)

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6 sample questions

Question 1.
What happens to reaction rates if the temperature decreases?
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Think about molecular movement.
Question 2.
Define activation energy.
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Look at the threshold for reactions.
3Question 3.
Which equation describes the relationship between temperature and the rate constant?
- A = B * T
- k = A e^{(-E_a / RT)}
- RT = kA
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Recall the formula we discussed.
4Question 4.
True or False: An increase in activation energy decreases the rate constant.
- True
- False
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Focus on the energy barrier concept.
Question 5.
A reaction has an activation energy of 75 kJ/mol. Calculate the rate constant at 298 K if the frequency factor is 1 x 10^12 s^-1.
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Convert activation energy to J and apply the Arrhenius formula carefully.
Question 6.
If the rate constant at 300 K is 0.1 s^-1 and it doubles for every 10°C rise, what is the rate constant at 330 K?
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How many increments of 10°C in 30°?

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