Dead Battery

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Wendy 1E
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Joined: Sat Aug 17, 2019 12:17 am
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Dead Battery

Postby Wendy 1E » Wed Feb 19, 2020 8:51 pm

Can someone explain when a battery is dead in terms of what we discussed in lecture today? Thank you.

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

Re: Dead Battery

Postby Brooke Yasuda 2J » Wed Feb 19, 2020 8:53 pm

A battery is dead when the system is at equilibrium. This occurs when there is a buildup of charge in the cathode and the anode, so there will no longer be any flow of charge. This can be avoided by having something like a porous disk to maintain a neutral state in the anode and cathode.

Christine Honda 2I
Posts: 116
Joined: Sat Sep 14, 2019 12:17 am

Re: Dead Battery

Postby Christine Honda 2I » Wed Feb 19, 2020 9:00 pm

The absence of the flow of electrons or charge between the anode and cathode can also be solved by using a salt bridge!

Madelyn Romberg 1H
Posts: 102
Joined: Tue Oct 02, 2018 12:16 am

Re: Dead Battery

Postby Madelyn Romberg 1H » Wed Feb 19, 2020 10:19 pm

The system will reach equilibrium where the charges will no longer flow. In terms of a galvanic cell, adding a salt bridge can keep the system "neutral" and allow charges to keep flowing rather than build up.

Angus Wu_4G
Posts: 102
Joined: Fri Aug 02, 2019 12:15 am

Re: Dead Battery

Postby Angus Wu_4G » Wed Feb 19, 2020 10:44 pm

For a galvanic cell, a battery is also dead when you run of out metal in the anode. If Zn has to give off 2 electrons to become Zn2+ to power the battery, then your battery will die when you run out of Zn metal, since all you are left with is Zn2+ ion.

BritneyP- 2c
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Joined: Sat Sep 14, 2019 12:15 am

Re: Dead Battery

Postby BritneyP- 2c » Wed Feb 19, 2020 11:08 pm

The battery is dead when there is no more flow between the anode and the cathode, but this can be prevented with a salt bridge.

Posts: 97
Joined: Thu Jul 25, 2019 12:15 am

Re: Dead Battery

Postby 505306205 » Wed Feb 19, 2020 11:57 pm

A battery goes dead when the reaction inside has reached equilibrium ( the transfer of net charge has stopped).

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