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Topic: Question on the calculation of equlibrium constant  (Read 4180 times)

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Offline o0CY0o

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Question on the calculation of equlibrium constant
« on: May 10, 2009, 12:28:55 AM »
THe question was that calculation of equlibrium constant for
2H2+O2
2 H2O
Give the potential of 4H+ + 4 e -> 2H2 is 0.0000V
and the potential of O2 + 4H+ + 4e -> 2H2O  is 1.229 V
I know that we should start from Ecell =0  at equlibrium
and Eright = Eleft
yet, i don't know how to use the nerst equation to relate with equlitbium constant K
Help give me a help
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Offline plankk

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Re: Question on the calculation of equlibrium constant
« Reply #1 on: May 10, 2009, 04:02:04 AM »
What about Gibbs Free energy?
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Offline o0CY0o

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Re: Question on the calculation of equlibrium constant
« Reply #2 on: May 10, 2009, 04:04:02 AM »
Quote from: plankk on May 10, 2009, 04:02:04 AM
What about Gibbs Free energy?
:delta:G=-RTlnK
 :delta:G can be related to potential?
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Offline o0CY0o

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Re: Question on the calculation of equlibrium constant
« Reply #3 on: May 10, 2009, 09:05:47 AM »
Quote from: plankk on May 10, 2009, 04:02:04 AM
What about Gibbs Free energy?
I can work it out already thanks
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