A container at room temperature is filled with equal moles of O2(g), NO2(g) and He(g). The gases slowly leak through a pinhole in the container. After some gas has effused, which relationship is true about the partial pressures of the gas remaining in the container?
a) P He < P O2 < P NO2
b) P NO2 < P O2 < P He
c) P O2 < P NO2 < P He
d) P O2 = P NO2 = P He
I would assume since they have the same molar values they would technically have the same pressure assuming they are in the same container. However, I am not 100% sure.
3 answers
But does each gas effuse at the same rate?
I am not sure.
They don't. Look up Graham's Law. The rate of effusion is inverse;u proportional to the square root of the molar mass.
3 answers