Maxwell-Boltzmann distributions Quiz
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5 questions, one answer each
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1. What happens to the area under the Maxwell–Boltzmann curve when the temperature of a fixed amount of gas is raised?
- A. It increases
- B. It decreases
- C. It stays the same
- D. It moves to the right
2. A catalyst increases the rate of a reaction by
- A. moving the curve to a higher energy
- B. lowering the activation energy so more molecules have energy ≥ Ea
- C. raising the mean energy of the molecules
- D. increasing the number of molecules
3. Which change to the distribution explains why a higher temperature gives a faster reaction?
- A. The peak moves to a lower energy
- B. Ea decreases
- C. The area under the curve increases
- D. The area to the right of Ea increases
4. Which feature is the same for a gas at 300 K and at 400 K?
- A. The height of the peak
- B. The energy of the peak
- C. The area under the curve
- D. The area to the right of Ea
5. Which statement about the Maxwell–Boltzmann distribution is correct?
- A. The curve starts at the origin
- B. The curve ends at a maximum energy
- C. The peak shows the energy of the fastest molecules
- D. The curve is symmetrical about the peak