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- 1. Multiple Choice
The Maxwell–Boltzmann distribution of molecular energies in a sample of gas at a fixed temperature is shown.
Which letter represents the mean energy of the molecules?
A
B
C
D
- 2. Multiple Choice
The diagram shows the Maxwell−Boltzmann distribution of molecular energies in a gas at two different temperatures.
Which letter represents the most probable energy of the molecules at the higher temperature?
A
B
C
D
- 3. Multiple Choice
The question below is about the Maxwell–Boltzmann distribution shown for a sample of a gas, X, at two different temperatures.
Which letter shows the mean energy of the molecules at the higher temperature?
P
Q
R
S
- 4. Multiple Choice
The question below is about the Maxwell–Boltzmann distribution shown for a sample of a gas, X, at two different temperatures.
Which statement is correct for the higher temperature?
The area under the curve to the left of Ea decreases.
The total area under the curve increases.
The activation energy decreases.
More molecules have the mean energy.
- 5. Multiple Choice
This question is about the Maxwell–Boltzmann distribution of molecular energies in a sample of a gas shown in the figure below.
Which letter best represents the mean energy of the molecules?
A
B
C
D
- 6. Multiple Choice
This question is about the Maxwell–Boltzmann distribution of molecular energies in a sample of a gas shown in the figure below.
What does the area under the curve represent?
The total energy of the particles.
The total number of particles.
The number of particles that can react with each other.
The total number of particles that have activation energy.
- 7. Multiple Choice
The graph below shows a typical energy distribution for particles of an ideal gas in a sealed container at a fixed temperature.
Which of the following statements is true?
Position A represents the mean energy of a molecule in the container.
Addition of a catalyst moves the position of EA to the right.
The area under the curve to the right of EA represents the number of molecules with enough energy to react.
The position of the peak of the curve at a higher temperature is further away from both axes.
- 8. Multiple Choice
The total area under the distribution curve represents
total energy.
activation energy.
total number of reacting molecules.
total number of molecules present.
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