A metal tank contains three gases: oxygen, helium, and nitrogen. If the partial pressures of the three gases in the tank are 35 atm of O2, 5 atm of N2, and 25 atm of He, what is the total pressure inside of the tank?

dalton's law

1 Answer
anor277
Jul 30, 2018

Is not #P_"Total"=65*atm#...?

Explanation:

Old Dalton's Law of partial pressures holds that in a gaseous mixture the partial pressure exerted by a component gas is the same as it would exert if it ALONE occupied the container. The total pressure is the sum of the individual partial pressures.

Got all that?

And so for your problem the partial pressures were specified...

#P_"Total"=P_"dioxygen"+P_"dinitrogen"+P_"helium"#

#P_"Total"={35+5+25}*atm# #=??*atm#

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