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crays
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Hi guys, I'm just wondering why is there partial pressure when they said all molecule occupy the same volume in a gas. like in rtp you get 22.4 .
Why Is There Partial Pressure If All Molecules Occupy the Same Volume in a Gas?
- Thread starter crays
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In summary, the concept of partial pressure in a gas is based on the idea that molecules are far enough apart that they do not interfere with each other, and therefore the pressure caused by each type of molecule can be calculated separately.
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tiny-tim
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crays said:
Hi crays!
Pressure (which is force per area) is basically the force caused by molecules hitting a (usually imaginary) square metre surface …
so if only 20% of the molecules are oxygen, then the oxygen is supplying only 20% of that force.
Also, as http://en.wikipedia.org/wiki/Partial_pressure#Dalton.27s_law_of_partial_pressures" says …
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- #3
crays
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Thanks a lot :)
FAQ: Why Is There Partial Pressure If All Molecules Occupy the Same Volume in a Gas?
What is partial pressure?
Partial pressure is the pressure exerted by a single gas in a mixture of gases. It is equal to the total pressure of the mixture multiplied by the mole fraction of the gas in question.
How is partial pressure calculated?
Partial pressure is calculated by multiplying the total pressure of the mixture by the mole fraction of the gas in question. The mole fraction is the number of moles of the gas divided by the total number of moles in the mixture.
Why is partial pressure important in gas mixtures?
Partial pressure is important in gas mixtures because it helps determine the behavior of individual gases within the mixture. It is also used in various calculations, such as the ideal gas law, to accurately describe the properties of the gas mixture.
How does temperature affect partial pressure?
According to the ideal gas law, an increase in temperature will result in an increase in the kinetic energy of gas molecules, causing them to collide more frequently and with greater force. This will result in an increase in the partial pressure of the gas in the mixture.
What is the relationship between partial pressure and gas solubility?
The higher the partial pressure of a gas, the more soluble it is in a liquid. This is known as Henry's Law. As the partial pressure increases, more gas molecules will dissolve in the liquid, and vice versa.
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