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Fraction of argon gas at 400k energy > 10kJ
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Topic: Fraction of argon gas at 400k energy > 10kJ (Read 5046 times)
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Zamzen
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Fraction of argon gas at 400k energy > 10kJ
«
on:
April 27, 2011, 04:47:30 AM »
Hi all!
Question states:
Calculate the fraction of atoms in a sample of argon gas at 400k that have an energy of 10kJ or greater.
I have NO ide how to tackle this problem. It is a question in my chemical kinetics chapter. What i do know is the avarage kinetic energy formula Wk=RT*3/2 where R is the gas constant 8.31 T is the absolute temperature. From there I do not know how to proceed.
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Schrödinger
Chemist
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Re: Fraction of argon gas at 400k energy > 10kJ
«
Reply #1 on:
April 27, 2011, 06:20:24 AM »
Usually, such fractions are calculated using the Boltzmann distribution : for the fractional number of particles N
i
/N occupying a set of states i possessing energy E
i
, N
i
is proportional to $$ e^{(-E_{i}/(k_{B}T))} /$$
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Zamzen
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Re: Fraction of argon gas at 400k energy > 10kJ
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Reply #2 on:
April 29, 2011, 10:39:15 PM »
Thank you!!!
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Fraction of argon gas at 400k energy > 10kJ