You have a 1 L container of a gas at 20°C and 1 atm. Without opening the container, how could you tell whether the gas is chlorine or fluorine?
2 Answers
The ideal gas equation is
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Asuming the mass of the container is negligible,
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Determine the mass of the container plus gas.
Explanation:
This assumes that you know the mass of the container.
We can use the Ideal Gas Law to calculate the mass of the gas.
#color(blue)(bar(ul(|color(white)(a/a)pV = nRT = m/MRTcolor(white)(a/a)|)))" "#
#m = (pVM)/(RT)#
If the gas is chlorine,
If the gas is fluorine,
Thus, if the mass of container plus gas is 2.9 g more than the mass of the empty container, the gas is chlorine.
If the mass difference is only 1.6 g, the gas is fluorine.