Salt bridges

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Maya Gollamudi 1G
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Salt bridges

Postby Maya Gollamudi 1G » Sat Feb 29, 2020 3:47 pm

How does a salt bridge work and what is its effect on the battery?

Jared Khoo 1G
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Re: Salt bridges

Postby Jared Khoo 1G » Sat Feb 29, 2020 3:54 pm

Salt bridges ensure neutrality on both the cathode and the anode. As the cathode gets more negative over time and the anode gets more positive over time, salt bridges pump anions to the anode and cations to the cathode.

Rory Simpson 2F
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Re: Salt bridges

Postby Rory Simpson 2F » Sat Feb 29, 2020 5:32 pm

As the redox reaction continues in a cell, the electrons will move from the anode to the cathode. If the salt bridge weren't there, eventually the reaction would stop as one half reaction gets increasingly positive and the other gets increasingly negative. With the salt bridge, the ion flow counteracts the shifts in charge so that the charges remain balanced and the reaction continues.

Kavya Immadisetty 2B
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Re: Salt bridges

Postby Kavya Immadisetty 2B » Sat Feb 29, 2020 6:26 pm

Without a salt bridge, the cell would stop working soon because the cathode would be too negative and would repulse the electrons which would stop working.

Daria MacAuslan 1H
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Re: Salt bridges

Postby Daria MacAuslan 1H » Sat Feb 29, 2020 9:20 pm

In a battery, if ions were to flow freely to their corresponding sides, there would eventually be a buildup of charge. The cathode side would get extremely negative because of the electrons flowing to it, and the anode side would get very positive. The salt bridge neutralizes this and prevents it from happening.

Nicholas_Gladkov_2J
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Re: Salt bridges

Postby Nicholas_Gladkov_2J » Sat Feb 29, 2020 9:28 pm

Maya Gollamudi 1G wrote:How does a salt bridge work and what is its effect on the battery?


It is important to have the salt bridge, because it maintains the neutrality between the two solutions in the Galvanic cell.
The anion is transferred from the cathode to the anode, while the electrons flow from the anode the the cathode.

Hannah Pham
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Re: Salt bridges

Postby Hannah Pham » Sat Feb 29, 2020 10:36 pm

The purpose of a salt bridge is to balance the charges between the half cells. The electrons flow from the anode to the cathode.

Asha Agarwal 1E
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Re: Salt bridges

Postby Asha Agarwal 1E » Sat Feb 29, 2020 11:05 pm

The salt bridge neutralizes the cell so there is no longer buildup of charges. This allows the battery to last for longer as the flow of electrons can continue.

vanessas0123
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Re: Salt bridges

Postby vanessas0123 » Sun Mar 01, 2020 12:51 am

The salt bridge allows for transfer of electron and charge from anode to cathode, balancing the charges between the half cells.

RobertXu_2J
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Re: Salt bridges

Postby RobertXu_2J » Sun Mar 01, 2020 3:05 am

Salt bridges balance the charges of both sides, by allowing for the transfer of electrons from one side to the other. If there was no salt bridge, then the build-up of ions (cations at the cathode and anions at the anode) would cease the flow of electrons, but the salt bridge allows for ions to be added to each side as needed to neutralize that build up and allow the transfer of electrons to continue.

Kayla Maldonado 1C
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Re: Salt bridges

Postby Kayla Maldonado 1C » Sun Mar 01, 2020 3:54 am

Kavya Immadi 3D wrote:Without a salt bridge, the cell would stop working soon because the cathode would be too negative and would repulse the electrons which would stop working.

If this were to occur, would the cathode begin releasing electrons back to the anode since it repulses the electrons?

Kavya Immadisetty 2B
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Re: Salt bridges

Postby Kavya Immadisetty 2B » Mon Mar 02, 2020 8:38 pm

Kayla Maldonado 1A wrote:
Kavya Immadi 3D wrote:Without a salt bridge, the cell would stop working soon because the cathode would be too negative and would repulse the electrons which would stop working.

If this were to occur, would the cathode begin releasing electrons back to the anode since it repulses the electrons?


I think so. I'm pretty sure the cell would be in a state of equilibrium with the forward and reverse reactions occurring equally. So the cathode and anode would release electrons at the same rate.


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