Both electrodes in same electrolyte? [Electrochemical cell]

[Kqwert]

Homework Statement

Hello,

In 9/10 cases when working with electrochemical cells, I draw two chambers, where the electrodes are connected by a wire and the two cells by a salt bridge. The role of the wire is to lead the electrons from the anode to the cathode where as the role of the salt bridge is to balance the charge differences that occur due to the movement of electrons.

I do however also remember to have seen situations where the two electrodes are placed in the same chamber.

So my question is: in what scenarios can one actually make an electrochemical cell with only one electrolyte, instead of two electrolytes connected by a salt bridge?

Relevant Equations

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[Borek]

For example https://en.wikipedia.org/wiki/Electrowinning