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Partial Pressure

Posted: Mon Jan 13, 2020 4:13 pm
by Ghadir Seder 1G
When calculating partial pressure, why is it called "partial pressure" and not just pressure? What does this value represent?

Re: Partial Pressure

Posted: Mon Jan 13, 2020 4:16 pm
by Brian_Ho_2B
It is called partial pressure instead of just pressure because there are several gases in a given volume at once. Each gas has a certain amount of moles that occupies part of the total pressure. The sum of all the partial pressures of the gases present equals the total pressure. If only one gas was present, then the "partial pressure" of that gas would just be the pressure, since it's the only gas.

Re: Partial Pressure

Posted: Tue Jan 14, 2020 12:45 am
by Angus Wu_4G
It is called partial pressure because when there are multiple gases, each gas is contributing to the overall pressure, and therefore the contribution of each individual gas to the overall pressure is called the partial pressure. According to Dalton's law of partial pressures, if you add up all the partial pressures of all the gases in a container, you will end up with the total amount of pressure in the container.

Re: Partial Pressure

Posted: Tue Jan 14, 2020 9:08 am
by Joowon Seo 3A
It is called partial pressure because in a mixture of gases, each individual gas contributes to the overall pressure.

Re: Partial Pressure

Posted: Tue Jan 14, 2020 12:27 pm
by Lauren Tanaka 1A
The partial pressure represents the it is the pressure of each individual gas of the chemical reaction. The total pressure would be the combined value of each individual gas in the reaction.

Re: Partial Pressure

Posted: Tue Jan 14, 2020 12:35 pm
by 205150314
Its called partial pressure because you are only calculating the pressure of that one gas in the mixture of gases so you're only getting one piece reaction. Thats why there is a partial pressure and a total pressure.

Re: Partial Pressure

Posted: Wed Jan 15, 2020 9:48 am
by nicole-2B
Brian_Ho_2B wrote:It is called partial pressure instead of just pressure because there are several gases in a given volume at once. Each gas has a certain amount of moles that occupies part of the total pressure. The sum of all the partial pressures of the gases present equals the total pressure. If only one gas was present, then the "partial pressure" of that gas would just be the pressure, since it's the only gas.

Thanks for explaining!!

Re: Partial Pressure

Posted: Wed Jan 15, 2020 9:55 am
by Nathan Nakaguchi 1G
It is partial pressure because each compound contributes to the whole pressure, so the pressure caused by one compound would be called partial.

Re: Partial Pressure

Posted: Fri Jan 17, 2020 5:28 pm
by Diana Andrade_4F
Each gas in a reaction has a partial pressure that all come together to make a whole pressure.