The following gases are at STP. Which one will diffuse the fastest? F2, CO2, He, SO2, NO, NH3

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07-03-2017
Chemistry

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The following gases are at STP. Which one will diffuse the fastest? F2, CO2, He, SO2, NO, NH3

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taskmasters taskmasters · Answer 1 · 2017-03-17T17:14:05+01:00

taskmasters taskmasters

17-03-2017

this can be solve using the grahams law, which states that the rate of diffusion of the gas is inversely proportional the square root of the molar mass of the gas. meaning the gas with smaller molar mass is the fastest to diffuse

molar mass of the following
F2 = 38 g/mol
CO2 = 44 g/mol
He = 4 g/mol
SO2 = 64 g/mol
NO = 30 g/mol
NH3 = 17 g/mol

so the fastest is He

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