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Purpose of Salt Bridge

Posted: Thu Feb 20, 2020 11:28 am
by Viviana Velasquez
Can someone explain what the salt bridge does and how it achieves it's purpose?

Re: Purpose of Salt Bridge

Posted: Thu Feb 20, 2020 11:35 am
by Abby Soriano 1J
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.

Re: Purpose of Salt Bridge

Posted: Thu Feb 20, 2020 12:09 pm
by Eileen Si 1G
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.

Re: Purpose of Salt Bridge

Posted: Thu Feb 20, 2020 12:14 pm
by Zoya Mulji 1K
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.

Re: Purpose of Salt Bridge

Posted: Thu Feb 20, 2020 4:08 pm
by LNgo 1G
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.

Re: Purpose of Salt Bridge

Posted: Thu Feb 20, 2020 6:32 pm
by Jainam Shah 4I
The salt bridge helps the electrolyte solutions stay neutral so that the anode doesn't become too positively charged and an imbalance develops.

Re: Purpose of Salt Bridge

Posted: Thu Feb 20, 2020 6:50 pm
by Anthony Hatashita 4H
When electrons move, the salt bridge helps balance the charges of the two solutions.

Re: Purpose of Salt Bridge

Posted: Thu Feb 20, 2020 9:56 pm
by Minh Ngo 4G
To keep the electrons flowing back so that the "negative" doesn't build up on the cathode side

Re: Purpose of Salt Bridge

Posted: Fri Feb 21, 2020 12:34 am
by DLee_1L
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?

Re: Purpose of Salt Bridge

Posted: Fri Feb 21, 2020 11:12 pm
by Amanda Lin 2I
I don’t think the ions in the salt bridge can run out.

Re: Purpose of Salt Bridge

Posted: Sat Feb 22, 2020 10:48 am
by Angela Prince 1J
the purpose of the salt bridge is to neutralize the two reactions.

Re: Purpose of Salt Bridge

Posted: Sat Feb 22, 2020 11:07 am
by Rodrigo2J
The purpose of the salt bridge to maintain a neutral charge on both sides of the battery.

Re: Purpose of Salt Bridge

Posted: Sat Feb 22, 2020 11:09 am
by Angela Patel 2J
But the battery still dies, so when does the salt bridge stop working?