Galvanic Cells and water

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Galvanic Cells and water

Postby Jose_Arambulo_2I » Sun Feb 12, 2017 12:31 am

I have a quick question about designing galvanic cells. Once you figure out the half reactions and choose the cathode and anode sides, is it just convention to leave out water even though it shows up in one or both of the half reactions? Or is it left out for the same reason why it's left out in equilibrium constant expressions, that is because it is in excess as a solvent?

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Re: Galvanic Cells and water

Postby Chem_Mod » Sun Feb 12, 2017 11:23 am

Yes, if it is not an active participant in the redox reaction, it will be left out of the equation. Think about it as an inert reagent, if it shows up on both sides of the equation, it is a spectator and we would cancel it out anyways.

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