Dalton's Law of Partial Pressures
The partial pressure of an ideal gas in a mixture is equal to the pressure it would exert if it occupied the same volume alone at the same temperature. This is because ideal gas molecules are so far apart that they don't interfere with each other at all. Actual real-world gases come very close to this ideal.
A consequence of this is that the total pressure of a mixture of ideal gases is equal to the sum of the partial pressures of the individual gases in the mixture as stated by Dalton's law. For example, given an ideal gas mixture of nitrogen (N2), hydrogen (H2) and ammonia (NH3):
| where: | |
| = total pressure of the gas mixture | |
| = partial pressure of nitrogen (N2) | |
| = partial pressure of hydrogen (H2) | |
| = partial pressure of ammonia (NH3) |
Read more about this topic: Partial Pressure
Famous quotes containing the words law, partial and/or pressures:
“Escalus. What do you think of the trade, Pompey? Is it a lawful trade?
Pompey. If the law would allow it, sir.
Escalus. But the law will not allow it, Pompey; nor it shall not be allowed in Vienna.
Pompey. Does your worship mean to geld and spay all the youth of the city?
Escalus. No, Pompey.
Pompey. Truly, sir, in my poor opinion they will to’t then. If your worship will take order for the drabs and the knaves, you need not to fear the bawds.”
—William Shakespeare (1564–1616)
“And meanwhile we have gone on living,
Living and partly living,
Picking together the pieces,
Gathering faggots at nightfall,
Building a partial shelter,
For sleeping and eating and drinking and laughter.”
—T.S. (Thomas Stearns)
“The pressures of being a parent are equal to any pressure on earth. To be a conscious parent, and really look to that little being’s mental and physical health, is a responsibility which most of us, including me, avoid most of the time because it’s too hard.”
—John Lennon (1940–1980)