What is partial pressure?
First - scroll down to your question about how long to move 17 feet. I think I finally got it.
say what???
Now partial pressure means that if you have two(or more) gases in a bottle, their pressures add to a total pressure, although their volumes are the same bottle volume and their temperatures are the same.
so if you are doing P V = n R T
for O2 and N2 in a bottle
then V and T and R are the same for both
but we will have different n for each and different P for each.
To get the total pressure we would add the O2 pressure to the N2 pressure.
Sorry, that was Megan with the hard math question
okay thanks:) can you explain this one to me.... a box with a volume of 22.4 L CONTAINS 1.0 mol of nitrogen and 2.0 mol of hydrogen at zero degrees celcius. Which of the flollowing statements is true?
the correct statement is the partial pressure of N2 is 101kPa. How come??
ohhhhh i ccc. Thanks for your help:) you are brilliant!!!!
One mole of an ideal gas at 1 atm which is about 101 kPa at 0 deg C occupies about 22.4 liters
Therefore the pressure of one mole of N2 at those conditions will be about one atm or 101 kPa
Of course the TOTAL pressure in the box will be 3 atm with additional 2 atm from the H2
OHHHHHHHHHHHHHH because those are the STP'S value's right?? Thanks Genius
You can check that easily
V = n R T/P
V = 1 * 8.3 * 273 / 101 kPa
V =22.4 sure enough
Partial pressure is a concept in thermodynamics and gas laws that refers to the pressure exerted by a single gas component within a mixture of gases. It is defined as the pressure that gas component would exert if it occupied the same volume by itself.
To calculate the partial pressure of a gas component, you need to know the total pressure of the gas mixture and the mole fraction of the gas component. The mole fraction is the ratio of the number of moles of the gas component to the total number of moles of all gases in the mixture.
The equation to calculate the partial pressure is:
Partial Pressure = Total Pressure * Mole Fraction
For example, if you have a mixture of gases with a total pressure of 100 kPa and the mole fraction of oxygen gas (O2) is 0.2, you can calculate the partial pressure of oxygen as follows:
Partial Pressure of O2 = 100 kPa * 0.2 = 20 kPa
So, in this example, the partial pressure of oxygen in the mixture is 20 kPa.