Adding Salt Bridge/Porous Disk to Reaction Beakers

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Layal Suboh 1I
Posts: 61
Joined: Fri Sep 28, 2018 12:23 am

Adding Salt Bridge/Porous Disk to Reaction Beakers

Postby Layal Suboh 1I » Wed Feb 20, 2019 4:45 pm

Dr. Lavelle discussed that a salt bridge or porous disk must be added to reaction beakers to remain neutral. What is the purpose of that?

Tuong Nguyen 2I
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Joined: Fri Sep 28, 2018 12:26 am
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Re: Adding Salt Bridge/Porous Disk to Reaction Beakers

Postby Tuong Nguyen 2I » Wed Feb 20, 2019 4:57 pm

As electrons are transferred from the anode to the cathode, there is a salt that builds up which would create a charge gradient. In order to maintain a neutral solution, there needs to be a salt bridge that balances the charges.

Lia Inadomi 1I
Posts: 62
Joined: Fri Sep 28, 2018 12:15 am

Re: Adding Salt Bridge/Porous Disk to Reaction Beakers

Postby Lia Inadomi 1I » Wed Feb 20, 2019 10:50 pm

If a solution becomes too negatively charged, it will repel electrons so the addition of a salt bridge or a porous disk is to allow flow of electrons back to the reducing agent so that the solutions remain neutral and can continue to transfer electrons. It essentially makes the flow of electrons into a loop so that the solutions remain neutral.


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