Question about concentration cell

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EMT313

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Is a concentration cell a galvanic cell (meaning its spontaneous and anode is negative) or a electrolytic cell (meaning its non-spontaneous and its anode is positive)?

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Cawolf

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A galvanic cell with the anode being in low concentration and the cathode being in high concentration.
 

Cawolf

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I guess so? I am not really sure what the point would be though.

I thought about it and it seems like if you applied a voltage greater than the E value of the reverse reaction then you could increase the concentration in the higher concentration cell.

But why use electrical energy to produce a gradient that already exists?
 
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Cawolf

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True. I was just saying I haven't heard of it before - but it may be possible.
 
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