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Salt Bridge

Posted: Sat Feb 22, 2020 4:14 pm
by Lindsey Chheng 1E
I know a salt bridge is there to keep both solutions neutral, but what exactly is going on inside the salt bridge that allows it to contribute to the galvanic cell?

Re: Salt Bridge

Posted: Sat Feb 22, 2020 4:16 pm
by claudia_1h
A salt bridge allows for the flow of the negative ions that aren't participating in the redox reaction. Remember that we cannot just put aqueous ions in solution, they must dissociate from a solid salt. Those ions can make the charge unbalanced, so having a salt bridge essentially corrects that.

Re: Salt Bridge

Posted: Sat Feb 22, 2020 4:39 pm
by MaggieHan1L
It lets ions flow freely and thus the reaction won't be influenced by all of the free ions.

Re: Salt Bridge

Posted: Sat Feb 22, 2020 5:09 pm
by nehashetty_2G
A salt bridge comes is significant to a galvanic cell because it eases the charge buildup. It allows the ions to transfer when which allows the solutions to stay neutral overtime.

Re: Salt Bridge

Posted: Sat Feb 22, 2020 5:29 pm
by 005206171
nehashetty_2G wrote:A salt bridge comes is significant to a galvanic cell because it eases the charge buildup. It allows the ions to transfer when which allows the solutions to stay neutral overtime.


Why do the solutions need to stay neutral?

Re: Salt Bridge

Posted: Sat Feb 22, 2020 7:16 pm
by Sartaj Bal 1J
005206171 wrote:
nehashetty_2G wrote:A salt bridge comes is significant to a galvanic cell because it eases the charge buildup. It allows the ions to transfer when which allows the solutions to stay neutral overtime.


Why do the solutions need to stay neutral?


The solutions need to stay neutral because if the charge builds up, the transfer of electrons from one reaction beaker to another will stop.

Re: Salt Bridge

Posted: Sat Feb 22, 2020 8:17 pm
by Keya Jonnalagadda 1A
In order to maintain electron flow between the anode and cathode, the sites need to be neutrally charged. They are not neutrally charged naturally, because ions are removed from either side as the electrons flow. Thus, the salt bridge allows anions to flow to the anode and cations to flow to the cathode to replace the removed ions and restore neutral charge.

Re: Salt Bridge

Posted: Sat Feb 22, 2020 9:34 pm
by Tahlia Mullins
In order to counteract the build up of charge in a galvanic cell, the salt bridge essentially contributes free ions that will not interfere with the redox reaction that is already taking place, it is simply meant to neutralize each side.

Re: Salt Bridge

Posted: Sat Feb 22, 2020 9:56 pm
by Andres Merlos 2L
The salt bridge is needed to allow ions to flow freely, which will free any charge buildup. It is important for this to occur, because it allows the flow of electrons to be maintained.

Re: Salt Bridge

Posted: Sat Feb 22, 2020 10:36 pm
by Callum Guo 1H
It is used to maintain a charge balance

Re: Salt Bridge

Posted: Sat Feb 22, 2020 11:07 pm
by Nicholas_Gladkov_2J
Lindsey Chheng 1E wrote:I know a salt bridge is there to keep both solutions neutral, but what exactly is going on inside the salt bridge that allows it to contribute to the galvanic cell?


In order for the two solutions of the Galvanic cell to stay neutral (because there is an exchange of e-), the ions (for example Cl-) move from the right to the left (cathode to anode).