The "role" of chemical equilibrium in electrochemical cells.

I do not understand why a reaction (oxidation and reduction) can continue producing electricity if equilibrium (at a given temperature) has already been reached. For example, the conversion of Fe2+(aq) ion to Fe3+(aq) ion is necessary for the anode half reaction to continue producing electrons while the continued conversion of CO3+ to CO2+ is necessary to accept the electrons. All species involved in the reaction are AQUEOUS, so why does the build-up of product NOT cause the reaction to stop? My chemistry book lists several half reactions that can be used to generate electricity. I understand that under aqueous conditions, the product or reactant may be solid/gas etc and therefore may ... click for more

charge,q,on nucleus?

What is total charge of the neptunium nucleus? (93 electrons MW=237.0482

The "role" of enthalpy in electrochemical cells.

Let's say that a battery (or electrochemical cell) has a total delta G value of -100 KJ and a total delta H value of -100 KJ. Does this mean that the battery will actually produce 100 KJ of heat AND 100 KJ of electricity when discharged (hypothetically)? If so, why don't batteries feel hot to the touch when in operation? Assuming the battery is rechargable, shouldn't the battery get cold when being recharged since the reverse of the exothermic (-100 KJ) reaction is endothermic (+100 KJ)? If so, why does a battery being recharged not feel cold?

#1 ONLY - Ellingham Diagram - Iron and Copper Oxides Reducing

ONLY #1 from the sheet attached. These questions are like chemistry. I need help with these problems involving material engineering and chemistry to see how metals are reduced from oxides. I've done this on a quiz, but left something out and got zero credit. So could you please help me by showing your work for the solution, so that I may see what I'm leaving out.

Ellingham diagrams for chemical rxns - ONLY #5

ONLY #5 from the sheet attached. These questions are like chemistry. I need help with these problems involving material engineering and chemistry to see how metals are reduced from oxides. I've done this on a quiz, but left something out and got zero credit. So could you please help me by showing your work for the solution, so that I may see what I'm leaving out.