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Topic: Delta G for Standard Hydrogen Electrode reaction  (Read 2569 times)

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Offline milo333

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Delta G for Standard Hydrogen Electrode reaction
« on: March 09, 2013, 03:32:27 PM »
I'm dealing with electrochemistry problems.
For the following reaction
2H+ + 2e-   ::equil::  H2   Eº= 0 V

Does it make sense to say

ΔGº = -2FEº = 0

Which would mean the reaction is in equilibrium?
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Offline Borek

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Re: Delta G for Standard Hydrogen Electrode reaction
« Reply #1 on: March 09, 2013, 03:36:16 PM »
Does it make sense to speak about equilibrium of a HALF cell reaction?
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Offline milo333

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Re: Delta G for Standard Hydrogen Electrode reaction
« Reply #2 on: March 09, 2013, 03:40:50 PM »
Not really, but given any another half reaction, what would a ΔG=0 mean in this context?
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Offline Borek

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Re: Delta G for Standard Hydrogen Electrode reaction
« Reply #3 on: March 09, 2013, 03:44:46 PM »
If you will combine two half reactions in such a way that the final E=0 (hence ΔG=0), then yes, you will have an equilibrium.
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