However, the total cell potential ( difference between oxidation and reduction half cell potentials ) will remain 1.23 V . This potential can be related to Gibbs free energy ( ?G ) by:
32.
In the other half cell, the copper cations in a copper sulfate electrolyte are drawn to the copper cathode to which they attach themselves as they adopt electrons from the copper electrode by the reduction reaction:
33.
Any system or environment that accepts electrons from a normal hydrogen electrode is a half cell that is defined as having a positive redox potential; any system donating electrons to the hydrogen electrode is defined as having a negative redox potential.
34.
The standard hydrogen electrode ( SHE ) is the reference from which all standard redox potentials are determined and has been assigned an arbitrary half cell potential of 0.0 mV . However, it is fragile and impractical for routine laboratory use.
35.
Also does this value of Q or \ Delta Q change depending on the ratio of concentration of ions in the half cells ( according to the Nernst equation initial voltage is the same for the same ratio of product ions and reactant ions )?
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