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Topic: Ideal Gas Constant in calculating Equilibrium  (Read 2562 times)

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Offline abe.nong

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Ideal Gas Constant in calculating Equilibrium
« on: March 27, 2012, 03:03:25 AM »
Hi Peoples,

Can anyone explain to me why the gas constant is 0.0821 atm*liter/moles*Kelvin when we are using the equation Kp = Kc(RT)^n

why isn't it 8.314 J/mole*Kelvin ?

Thanks

Offline Borek

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Re: Ideal Gas Constant in calculating Equilibrium
« Reply #1 on: March 27, 2012, 03:23:37 AM »
Just for the convenience, concentration is expressed in mol/L so it is easier to use R with L, not with m3.

Note that it is the same constant, just expressed with different units. It is like stating "I am 180 cm tall" instead of "I am 5 feet 11 inches tall".

Try to convert J/mole to atm*liter/mole and you will see for yourself.
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