How would you go about solving an equation of the type given?

Hi I would like to solve equation that goes something like...

In above equation is a constant. is the electrode potential while is the electrolyte potential.

Thank you for your help.

Where

Here and are concentrations. and F are constants.

Answer 1

[Star Strider]

With one equation in two unknowns, no solution likely exists unless analytic expressions for or (preferably both) exist, or a separate relation between the two functions exists that can be used to define them (so it then becomes two equations in two unknowns, a tractable problem).

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[Hashim]

Something like this exists

Where

Here and are concentrations. and F are constants.

[Walter Roberson]

You do not seem to be indicating the or are constants ?

You do not give us formula for or ? And the relevance of η is not clear? You do not indicate that it is a constant, for example.