Galvanic Cells

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Riya Sood 4G
Posts: 160
Joined: Sat Aug 24, 2019 12:18 am

Galvanic Cells

Postby Riya Sood 4G » Fri Feb 28, 2020 8:42 am

Do galvanic cells ever reach equilibrium where Ecell = 0?

Connie Chen 1E
Posts: 51
Joined: Mon Jun 17, 2019 7:24 am

Re: Galvanic Cells

Postby Connie Chen 1E » Fri Feb 28, 2020 10:13 am

When Ecell equals zero the reaction has reached equilibrium. This means that E(cathode) is equal to E(anode) and there is no electron flow, meaning the battery has died out.

Brooke Yasuda 2J
Posts: 102
Joined: Sat Jul 20, 2019 12:17 am

Re: Galvanic Cells

Postby Brooke Yasuda 2J » Fri Feb 28, 2020 11:47 am

Yes and when Ecell is equal to zero, Gibbs free energy is also zero.

905373636
Posts: 62
Joined: Thu Aug 01, 2019 12:15 am

Re: Galvanic Cells

Postby 905373636 » Fri Feb 28, 2020 12:17 pm

Yes, when a battery is dead, the system has reached equilibrium -- though I'm wondering now if it's possible to 'revive' a battery or replace its galvanic cells concentration gradient?

bellaha4F
Posts: 104
Joined: Wed Sep 18, 2019 12:20 am

Re: Galvanic Cells

Postby bellaha4F » Fri Feb 28, 2020 1:13 pm

the galvanic cell will never have a negative Ecell right? because it's always a spontaneous reaction?

Riya Sood 4G
Posts: 160
Joined: Sat Aug 24, 2019 12:18 am

Re: Galvanic Cells

Postby Riya Sood 4G » Sun Mar 01, 2020 9:16 pm

905373636 wrote:Yes, when a battery is dead, the system has reached equilibrium -- though I'm wondering now if it's possible to 'revive' a battery or replace its galvanic cells concentration gradient?


yes it is possible to revive a battery by recharging it. This is done by passing an electric current through an external power source. That would be an example of electrolysis

Kimberly Koo 2I
Posts: 99
Joined: Sat Aug 17, 2019 12:17 am

Re: Galvanic Cells

Postby Kimberly Koo 2I » Sun Mar 01, 2020 9:25 pm

Yes, I'm also pretty sure a galvanic cell can never have a negative E cell

Celine 1F
Posts: 120
Joined: Fri Aug 02, 2019 12:16 am

Re: Galvanic Cells

Postby Celine 1F » Sun Mar 01, 2020 9:31 pm

When Ecell equals zero, the reaction is at equilibrium.

Natalie Benitez 1E
Posts: 100
Joined: Fri Aug 02, 2019 12:15 am

Re: Galvanic Cells

Postby Natalie Benitez 1E » Sun Mar 01, 2020 10:03 pm

If the galvanice cell ever reaches zero this means that the battery has died out and that there is no electron transfer occurring because the E(cathode) is equal to the E(anode).

Prasanna Padmanabham 4I
Posts: 111
Joined: Thu Jul 25, 2019 12:17 am

Re: Galvanic Cells

Postby Prasanna Padmanabham 4I » Sun Mar 01, 2020 10:05 pm

905373636 wrote:Yes, when a battery is dead, the system has reached equilibrium -- though I'm wondering now if it's possible to 'revive' a battery or replace its galvanic cells concentration gradient?



Isn't this done by recharging it by sending an electric current in the reverse direction...isn't that basically what you are doing when you are charging your phone?

Veronica Lu 2H
Posts: 89
Joined: Wed Sep 18, 2019 12:18 am
Been upvoted: 1 time

Re: Galvanic Cells

Postby Veronica Lu 2H » Sun Mar 01, 2020 10:15 pm

Zero means that the battery has died


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