salt bridge

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nshahwan 1L
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Joined: Fri Aug 30, 2019 12:18 am

salt bridge

Postby nshahwan 1L » Sun Feb 23, 2020 11:41 pm

can someone re explain what a salt bridge does?

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

Re: salt bridge

Postby Deepika Reddy 1A » Sun Feb 23, 2020 11:45 pm

A salt bridge ensures that the beakers do not have a build-up of charge. If the beakers are allowed to have charge build-up, then the galvanic cell would stop working because the electrons would not transfer to the reduction reaction beaker because of the buildup of negative charge. The salt bridge balances out the charges by adding ions to the solution.

peteryim
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Joined: Sat Sep 07, 2019 12:17 am

Re: salt bridge

Postby peteryim » Sun Feb 23, 2020 11:46 pm

Adding on, the salt bridge consists of salts that will balance out the building charge of the anion and cation.

nshahwan 1L
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Joined: Fri Aug 30, 2019 12:18 am

Re: salt bridge

Postby nshahwan 1L » Sun Mar 01, 2020 10:22 pm

Should there be any specific examples of salts that are in salt bridges that we should be aware of?

TarynD_1I
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Joined: Sat Aug 24, 2019 12:17 am

Re: salt bridge

Postby TarynD_1I » Sun Mar 01, 2020 10:23 pm

a salt bridge allows the electrons to go from the cathode to the anode to prevent charge buildup

Ashley Nguyen 2L
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Re: salt bridge

Postby Ashley Nguyen 2L » Sun Mar 01, 2020 10:28 pm

Some common salts used in a salt bridge are sodium chloride, potassium chloride, and potassium nitrate. The electrolyte chosen must easily dissociate and not react with any of the chemicals in the cell.

Prasanna Padmanabham 4I
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Re: salt bridge

Postby Prasanna Padmanabham 4I » Sun Mar 01, 2020 10:31 pm

nshahwan 1L wrote:Should there be any specific examples of salts that are in salt bridges that we should be aware of?


NaCl is an easy one to remember...the salts are there to balance out the charge and they don't react with the reactants or products.

Anna Chen 1K
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Re: salt bridge

Postby Anna Chen 1K » Sun Mar 01, 2020 10:34 pm

A salt bridge prevents ion buildup and helps the electrons transfer from the anode to cathode.

Sidharth D 1E
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Joined: Sat Aug 24, 2019 12:17 am

Re: salt bridge

Postby Sidharth D 1E » Sun Mar 01, 2020 11:00 pm

A salt bridge is meant to maintain charge as the electrons are transferred from the anode to cathode

preyasikumar_2L
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Joined: Fri Aug 09, 2019 12:17 am

Re: salt bridge

Postby preyasikumar_2L » Mon Mar 02, 2020 12:07 am

Since electrons move from the anode to the cathode, the cathode eventually becomes very negatively charged and would stop electrons from moving from anode to cathode because like charges repel. The salt bridge allows ions to move between the anode and cathode to maintain both solutions in a neutral state, like negatively charged ions would move from cathode to anode (or positively charged ions would move from anode to cathode) to help reduce the negative charge in the cathode to allow for more electrons to continue to flow to the cathode.


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