Salt Bridges

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Aliya Jain 2B
Posts: 101
Joined: Wed Sep 11, 2019 12:16 am

Salt Bridges

Postby Aliya Jain 2B » Sun Feb 23, 2020 11:37 pm

What is a salt bridge used for? I’m kinda confused about their role in galvanic cells

Brittney Hun 2C
Posts: 104
Joined: Wed Sep 11, 2019 12:15 am

Re: Salt Bridges

Postby Brittney Hun 2C » Sun Feb 23, 2020 11:38 pm

Hey Roomie! Since there is a flow of electrons, the salt bridge is used to balance the charges in the solution :)

andrewcj 2C
Posts: 102
Joined: Thu Jul 11, 2019 12:17 am

Re: Salt Bridges

Postby andrewcj 2C » Sun Feb 23, 2020 11:41 pm

The salt bridge allows for positive charges to be equalized in the anode half cell and negative charges to be equalized in the cathode half cell. This prevention of charge buildup allows the galvanic cell to continue working.

Deepika Reddy 1A
Posts: 125
Joined: Thu Jul 11, 2019 12:15 am

Re: Salt Bridges

Postby Deepika Reddy 1A » Sun Feb 23, 2020 11:42 pm

In a galvanic cell, there are electrons flowing from one beaker (the oxidation reaction) to the second beaker (reduction reaction). This means that there is going to be a building up of negative charge in the reduction reaction and it is gaining electrons and a buildup of positive charge in the oxidation beaker as it is losing electrons. Eventually, the galvanic cell would stop reacting because of this buildup of charge as the electrons would no longer want to go to the negatively charged solution in the reduction beaker. The salt bridge puts ions into both beakers that balance out the charges. This allows the galvanic cell to continue working.


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