Salt Bridge

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Celine 1F
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Joined: Fri Aug 02, 2019 12:16 am

Salt Bridge

Postby Celine 1F » Sun Feb 23, 2020 3:18 pm

Can someone explain to me what the purpose of the salt bridge is?

Riya Sood 4G
Posts: 160
Joined: Sat Aug 24, 2019 12:18 am

Re: Salt Bridge

Postby Riya Sood 4G » Sun Feb 23, 2020 3:38 pm

A salt bridge allows ions transfer. It keeps the 2 solutions on cathode and anode side neutral.

In addition in the worksheet that Dr. Lavelle posted on his website he states, "The half cells are connected by a salt bridge that allows the negatively charged spectator ions in solution to move from one half-cell (cathode) to the other (anode) to prevent charge buildup, so that the reaction can continue.

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Joined: Sat Sep 14, 2019 12:17 am

Re: Salt Bridge

Postby Jiyoon_Hwang_2I » Sun Feb 23, 2020 3:40 pm

The purpose of the salt bridge is to maintain the neutral charge in the solutions as electrons flow between the two solutions.

Posts: 102
Joined: Wed Sep 18, 2019 12:18 am

Re: Salt Bridge

Postby CMaduno_1L » Sun Feb 23, 2020 3:52 pm

Without a salt bridge, because the anode becomes more positive overtime and the cathode becomes more negative overtime, the cell would no longer cause a transfer of electrons. Electrons would have no reason to leave the anode to the cathode, which is negatively charged (like charges repel each other / opposites attract). The salt bridge neutralizes each solution and allows for this transfer of electrons to continue. Hope this helps!

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Joined: Fri Sep 28, 2018 12:29 am

Re: Salt Bridge

Postby Adriana_4F » Sun Feb 23, 2020 4:00 pm

It is to transfer electrons. A missing salt bridge will result in a more positive charge in the anode and a more negative charge in the cathode. In order to keep these charges neutral, the salt bridge allows electrons to travel from the anode to the cathode

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Joined: Wed Nov 14, 2018 12:18 am

Re: Salt Bridge

Postby Ryan_K_1K » Sun Feb 23, 2020 4:07 pm

the salt bridge transports electrons from the anode to the cathode

Omar Selim 1D
Posts: 108
Joined: Sat Jul 20, 2019 12:16 am

Re: Salt Bridge

Postby Omar Selim 1D » Sun Feb 23, 2020 4:09 pm

I believe the best way to understand the concept of a salt bridge is to liken it to a closed circuit. In order for a circuit to be complete, there must be a closed-loop in order for charges of positives and negatives to get balanced and have somewhere to go. The salt bridge essentially completes the circuit and closes that loop preventing a charge build-up that prevents the circuit from flowing.

Sidharth D 1E
Posts: 98
Joined: Sat Aug 24, 2019 12:17 am

Re: Salt Bridge

Postby Sidharth D 1E » Sun Feb 23, 2020 5:17 pm

The purpose of a salt bridge is to maintain charge as the electrons are transferred from the anode to cathode

Robert Tran 1B
Posts: 118
Joined: Thu Jul 11, 2019 12:15 am

Re: Salt Bridge

Postby Robert Tran 1B » Sun Feb 23, 2020 5:25 pm

The salt bridge ensures that the solution in the anode and the cathode stays neutral. Since electrons are being transferred as the redox reaction occurs, the charges of the anode and the cathode are changing. The salt bridge dispenses ions as they change to ensure that there is no polarization that would make the redox reaction unfavorable.

John Liang 2I
Posts: 102
Joined: Fri Aug 30, 2019 12:18 am

Re: Salt Bridge

Postby John Liang 2I » Sun Feb 23, 2020 5:26 pm

the salt bridge releases + and - ions into each side of the battery and maintains a neutral charge. for example, when Zn turns into Zn2+, it will bond with the Cl- ions of NaCl to prevent an overly positive cell. hope this helps!

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