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Considering a Daniell cell, is it possible to create endlessly electrical energy by using atmospheric temperature (for exemple) variations to modify the reaction's eqilibrium constant ? I apologize if this question is trivial.

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""endlessly "" For any electron in the circuit You have to react half a Zinc atom and a quarter of a MnO2. Temperature can alter the voltage of the cell, but never the amount of charge it gives off. And for Voltage: there is nothing "free" in that, thermodynamics works precisely in electrochemistry. –  Georg Oct 27 '11 at 17:22
    
I'll try to reformulate... My point is: if the system is put permanently under significant variations of temperature (positive and negative), will it be permanently reacting due to the modification of the equilibrium constant ? –  Bastien Essono Oct 27 '11 at 18:40
    
Bastien, google for "Nernst Equation". For a Danielle You need one term according to Nernst for the Kathode and another one for the Anode. But be aware: this is only euilibrium condition without any current! –  Georg Oct 27 '11 at 21:09

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