Chemistry - Ideal Gas Question with Solution | TestHub
= the molecular speed (in meters per second), = fraction of molecules with speed . For example, if , then . These questions are based on the adjacent plot, which shows the Maxwell-Boltzmann Distribution of molecular speeds for nitrogen gas N₂ at .
If the temperature were raised to 1500 K , fraction of molecules with most probable velocity
Options:
Answer:
Solution:
Correct Answer: (B) Lower than that at 1000 K
Explanation: As temperature increases, the Maxwell-Boltzmann distribution curve shifts to the right and flattens out.
Area Conservation: The total area under the curve must remain constant because the total fraction of molecules equals one.
Peak Height: Because the curve flattens and broadens, the maximum height of the peak decreases.
Conclusion: Since the peak height represents the fraction of molecules with the most probable velocity, this fraction decreases at higher temperatures.