AAMC 11 Redox

[MedPR]

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I'm confused about one thing. How can you tell that this is a galvanic cell and not an electrolytic cell? Is it just because there is a resistor (light bulb) instead of an EMF source? I got it down to two since the other two were obviously wrong based on the signs of the Ecell, but then I basically guessed and figured the experimenters were smart enough to make the anode/cathode the right reactions.

 

[MedPR]

bump 🙂

 

[HollowSuperet36]

Electrolytic powered by battery or outside power source. This is the characteristic Daniel cell, galvanic or voltaic cell.

 

[SaintJude]

Also, this is part of prototype of a galvanic cell setup. The energy of the redox reaction is harnessed by placing the oxidation/reduction half-reactions in separate containers. Just as AAMC suggests in its explanation, if you see two half reactions occurring in separate container, it's a galvanic cell. dG is negative and Ecell is positive

It's electrolytic cells that are then usually placed in one container.

 

[MedPR]

Electrolytic powered by battery or outside power source. This is the characteristic Daniel cell, galvanic or voltaic cell.

So the only way to tell is the fact that there is a resistor instead of an emf source?

Also, this is part of prototype of a galvanic cell setup. The energy of the redox reaction is harnessed by placing the oxidation/reduction half-reactions in separate containers. Just as AAMC suggests in its explanation, if you see two half reactions occurring in separate container, it's a galvanic cell. dG is negative and Ecell is positive

It's electrolytic cells that are then usually placed in one container.

Electrolytic cells use two solutions too.

 

[HollowSuperet36]

So the only way to tell is the fact that there is a resistor instead of an emf source?



Electrolytic cells use two solutions too.

Tis battery is powering itself and happens to have a light bulb attached to the wire through which the electrons or emf moves. Just adding a step to what you see in the book.

An electrolytic cell is powered by an outside source and the negative is attached to the cathode making it negative. And positive attached to the anode making it positive. Tell tale of electrolytic. (opposite in galvanic terminals)

Electrolysis is battery powered decomposition. If there is a battery attached to the terminals think electrolytic.

Look at the ammonium reaction in passage 1 of AAMC 11 it explains it in the passage.

 

[MedPR]

Tis battery is powering itself and happens to have a light bulb attached to the wire through which the electrons or emf moves. Just adding a step to what you see in the book.

An electrolytic cell is powered by an outside source and the negative is attached to the cathode making it negative. And positive attached to the anode making it positive. Tell tale of electrolytic. (opposite in galvanic terminals)

Electrolysis is battery powered decomposition. If there is a battery attached to the terminals think electrolytic.

Look at the ammonium reaction in passage 1 of AAMC 11 it explains it in the passage.

Yea, that's what I meant. There's a resistor in this circuit (the light bulb) instead of some outside emf source. Makes sense,thank you!