Average rms speed of oxygen in oxygen nitrogen micture
Answers
Answer:
The kinetic theory states that "The average kinetic energy of gas molecules is proportional to the absolute temperature of the gas". Not all molecules will have the same kinetic energy and hence the same speed. An increase in temperature increases the average speed of the molecules and the range of speeds.
Look at the image on the left. It represents the Maxwell-Boltzmann distribution curve of kinetic energy of oxygen molecules at three different temperatures.
The average kinetic energy of oxygen molecules and hydrogen molecules will be the same at any particular temperature. If we keep in mind that the formula for kinetic energy is 0.5mv2 it stands to reason that the lighter molecules(hydrogen) will have a greater speed than the oxygen molecules.
Answer:
Similarly, if the average velocity of the molecules is higher, the gas pressure is higher. ... Heavier molecules, such as oxygen, nitrogen, and water, have smaller rms speeds,