Purpose of Salt Bridge

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Viviana Velasquez
Posts: 97
Joined: Sat Jul 20, 2019 12:15 am

Purpose of Salt Bridge

Postby Viviana Velasquez » Thu Feb 20, 2020 11:28 am

Can someone explain what the salt bridge does and how it achieves it's purpose?

Abby Soriano 1J
Posts: 103
Joined: Sat Aug 24, 2019 12:16 am

Re: Purpose of Salt Bridge

Postby Abby Soriano 1J » Thu Feb 20, 2020 11:35 am

With the movement of electrons from the anode to the cathode, the charges of the solutions in a galvanic cell can buildup to be increasingly positive and negative. When this buildup of charge occurs, it can stop the movement of the electrons since they wouldn't want to continue moving towards an increasingly negative area. The salt bridge works to keep the solutions neutrals (and thus keep the movement of electrons going) by releasing anions into the more positive solution and cations into the more negative solution.

Eileen Si 1G
Posts: 120
Joined: Fri Aug 30, 2019 12:17 am

Re: Purpose of Salt Bridge

Postby Eileen Si 1G » Thu Feb 20, 2020 12:09 pm

The purpose of the salt bridge is to maintain the balance of the charges as the electrons move from one half cell to the other.

Zoya Mulji 1K
Posts: 105
Joined: Thu Jul 11, 2019 12:15 am

Re: Purpose of Salt Bridge

Postby Zoya Mulji 1K » Thu Feb 20, 2020 12:14 pm

Since e- move from left to right, eventually, the e- would build up on the right side and that would cause the battery to stop working/ make the e- stop moving. To avoid this, the salt bridge allows for the movement of ions so that e- don't build up on the right side.

LNgo 1G
Posts: 100
Joined: Sat Aug 24, 2019 12:16 am

Re: Purpose of Salt Bridge

Postby LNgo 1G » Thu Feb 20, 2020 4:08 pm

When electrons move from one solution in the cell, they are replaced by negatively charged ions, and when they move into the solution in the other cell, positively charged ions balance the negative charge.

Jainam Shah 4I
Posts: 130
Joined: Fri Aug 30, 2019 12:16 am

Re: Purpose of Salt Bridge

Postby Jainam Shah 4I » Thu Feb 20, 2020 6:32 pm

The salt bridge helps the electrolyte solutions stay neutral so that the anode doesn't become too positively charged and an imbalance develops.

Anthony Hatashita 4H
Posts: 103
Joined: Wed Sep 18, 2019 12:21 am

Re: Purpose of Salt Bridge

Postby Anthony Hatashita 4H » Thu Feb 20, 2020 6:50 pm

When electrons move, the salt bridge helps balance the charges of the two solutions.

Minh Ngo 4G
Posts: 137
Joined: Thu Jul 25, 2019 12:17 am

Re: Purpose of Salt Bridge

Postby Minh Ngo 4G » Thu Feb 20, 2020 9:56 pm

To keep the electrons flowing back so that the "negative" doesn't build up on the cathode side

DLee_1L
Posts: 103
Joined: Sat Aug 17, 2019 12:17 am

Re: Purpose of Salt Bridge

Postby DLee_1L » Fri Feb 21, 2020 12:34 am

Can the salt bridge eventually "run out" or stop dissolving due to the cathode and anode solution being too saturated with the the salt an electron buildup can occur and the cell stop working?

Amanda Lin 2I
Posts: 101
Joined: Sat Aug 17, 2019 12:15 am

Re: Purpose of Salt Bridge

Postby Amanda Lin 2I » Fri Feb 21, 2020 11:12 pm

I don’t think the ions in the salt bridge can run out.

Angela Prince 1J
Posts: 102
Joined: Sat Aug 24, 2019 12:17 am

Re: Purpose of Salt Bridge

Postby Angela Prince 1J » Sat Feb 22, 2020 10:48 am

the purpose of the salt bridge is to neutralize the two reactions.

Rodrigo2J
Posts: 102
Joined: Sat Jul 20, 2019 12:16 am

Re: Purpose of Salt Bridge

Postby Rodrigo2J » Sat Feb 22, 2020 11:07 am

The purpose of the salt bridge to maintain a neutral charge on both sides of the battery.

Angela Patel 2J
Posts: 110
Joined: Sat Aug 24, 2019 12:17 am

Re: Purpose of Salt Bridge

Postby Angela Patel 2J » Sat Feb 22, 2020 11:09 am

But the battery still dies, so when does the salt bridge stop working?


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