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Topic: Mole fractions  (Read 2714 times)

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Offline xenonp

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Mole fractions
« on: November 27, 2013, 11:28:29 AM »
Ethanoic acid dimerises in the gas phase. Find an expression for the equilibrium constant for dimerisation in terms of the mole fraction x of the monomer and the pressure of ethanoic acid.
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Offline Borek

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Re: Mole fractions
« Reply #1 on: November 27, 2013, 11:36:55 AM »
You have to show your attempts at solving the question to receive help. This is a forum policy.
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Offline xenonp

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Re: Mole fractions
« Reply #2 on: November 27, 2013, 11:39:05 AM »
Quote from: Borek on November 27, 2013, 11:36:55 AM
You have to show your attempts at solving the question to receive help. This is a forum policy.

Well I know the total mole fractions must add up to 1, so I deduced the mole fraction of monomeric CH3COOH is x and for the dimer is (1-x).

Kp = ((1-x)p) / (xp)^2 ?
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