Maxwell-Boltzmann distribution and temperature Quiz
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5 questions, one answer each
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1. What does the area under a Maxwell–Boltzmann curve represent?
- A. The activation energy
- B. The most probable energy
- C. The total number of molecules
- D. The rate of reaction
2. How does the curve change when the temperature increases?
- A. The peak is lower and moves to higher energy
- B. The peak is higher and moves to higher energy
- C. The peak is lower and moves to lower energy
- D. The area under the curve increases
3. Why does a small rise in temperature greatly increase the rate?
- A. Collisions become much more frequent
- B. The activation energy is lowered
- C. The molecules gain a lot of mass
- D. The proportion of molecules with energy ≥ Ea increases greatly
4. Which is the best definition of the rate of reaction?
- A. The energy released per second
- B. The change in concentration of a reactant or product per unit time
- C. The time taken for a reaction to finish
- D. The number of collisions per second
5. A reaction takes 60 s at 20 °C and 15 s at 40 °C. How many times faster is it at 40 °C?
- A. 2
- B. 3
- C. 4
- D. 45