Salt Bridge

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Salt Bridge

Postby TiffanyL1G » Sat Feb 23, 2019 2:21 pm

In the cell diagram Dr. Lavelle always draws on the board, what exactly does the salt bridge do?

Aleeque Marselian 1A
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Joined: Fri Sep 28, 2018 12:24 am

Re: Salt Bridge

Postby Aleeque Marselian 1A » Sat Feb 23, 2019 2:29 pm

The salt bridge keeps solutions from mixing. It consists of a gel containing a concentrated aqueous salt solution in an inverted U-tube and allows the flow of ions, which done affect the cell reaction. The salt bridge completes the circuit.

Melissa Bu 1B
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Re: Salt Bridge

Postby Melissa Bu 1B » Sat Feb 23, 2019 3:27 pm

In addition, the salt bridge neutralizes the two solutions as they become charged due to electron transfer between the metal electrodes.

Matthew Mar 1J
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Re: Salt Bridge

Postby Matthew Mar 1J » Sat Feb 23, 2019 3:30 pm

If the reaction were to occur without a salt bridge, the electrons would move from one side to another then promptly stop because of the charge difference. The salt bridge equalises the charge by allowing ions to flow between the two sides without allowing any of the solution to transfer.

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