I was trying to solve a problem from Irodov book that asked how the concentration ratio of nytrogen and hydrogen varies with the altitude (initial ratio = n0), considering the temperature to be constant.(adsbygoogle = window.adsbygoogle || []).push({});

If there was only one gas,

http://img543.imageshack.us/img543/664/77110068.png [Broken]

dP = -dm g/A

dP = -dV ρ g/A

dP = -dh ρ g

dP = -dh PMg/RT

dP/P = -Mg/RT dh

P = P_{0}e^{-hMg/RT}

Where:

P_{0}is initial pressure

M is molar mass

ρ is density

But how would it work for 2 different gases?

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# Homework Help: IRODOV thermodynamics problem

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