galvanic cell function

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galvanic cell function

Postby ashwathinair » Sun Feb 23, 2020 11:11 pm

I wasn't in class for lecture this week so I don't fully understand the cell diagram for a galvanic cell. Exactly how does a galvanic cell work (through redox reaction, salt bridge/porous disk, etc)?

Deepika Reddy 1A
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Re: galvanic cell function

Postby Deepika Reddy 1A » Sun Feb 23, 2020 11:33 pm

Basically, there are two beakers and we are looking at a redox reaction taking place. One of the half-reactions is taking place in one of the beakers and the other is taking place in the second beaker. One of the reactions will be an oxidation reaction and will be losing electrons and the other reaction will be gaining electrons because it is a reduction reaction. The salt bridge is there to ensure that the reaction continues because the electrons are going to one of the beakers so eventually the buildup of charge would stop the electrons from continuing to go into the beaker. The salt bridge supplies ions to both beakers to keep the charge stable and allowing the reaction to continue.

andrewcj 2C
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Re: galvanic cell function

Postby andrewcj 2C » Sun Feb 23, 2020 11:36 pm

The work is done by the flow of electrons. So if there were some electronic gadget on the connection between the cathode and anode, it would be powered by the cell.

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