No Salt Bridge

Moderators: Chem_Mod, Chem_Admin

Labiba Sardar 2A
Posts: 103
Joined: Sat Jul 20, 2019 12:15 am

No Salt Bridge

Postby Labiba Sardar 2A » Sat Feb 29, 2020 9:29 am

In the case when there's no salt bridge (and there's a build up of charges in the anode and cathode), why does the left side (anode) build up in positive charge while the right side (cathode) build up in negative charge?

Parker Smith
Posts: 102
Joined: Thu Jul 25, 2019 12:15 am

Re: No Salt Bridge

Postby Parker Smith » Sat Feb 29, 2020 10:16 am

Since the anode is losing electrons, it will gradually build up a positive charge. As for the cathode, it is receiving electrons from the anode, and therefore gaining a negative charge

Manav Govil 1B
Posts: 104
Joined: Sat Sep 07, 2019 12:19 am

Re: No Salt Bridge

Postby Manav Govil 1B » Sat Feb 29, 2020 11:40 am

I found this site helpful when learning about the function of a salt bridge, which is to make sure that only electrons provide the energy to the system.

https://chemistry.stackexchange.com/que ... re-be-used

I hope this helps!

Bryce Barbee
Posts: 103
Joined: Wed Sep 18, 2019 12:20 am

Re: No Salt Bridge

Postby Bryce Barbee » Sat Feb 29, 2020 12:40 pm

The left is losing electrons but they have no where to go so they build up. This is why the negative charge increases.

Jared Khoo 1G
Posts: 107
Joined: Wed Sep 18, 2019 12:16 am

Re: No Salt Bridge

Postby Jared Khoo 1G » Sat Feb 29, 2020 3:56 pm

In the absence of a salt bridge, the anode will keep losing electrons and hence get more positive. A salt bridge would pump anions to the anode making it less positive.

Daniela Shatzki 2E
Posts: 53
Joined: Sat Aug 24, 2019 12:16 am

Re: No Salt Bridge

Postby Daniela Shatzki 2E » Sat Feb 29, 2020 10:18 pm

kind of reiterating, but when there is no salt bridge the anode loses electrons because it is sending them to the cathode side, therefore the anode becomes more positive and the cathode becomes more negative. therefore, the positive ions from the salt bridge travel to the side with an excess negative charge (anode) while the negative ions travel to the side with an excess positive charge (cathode) to balance out the charges to neutral.

Hannah Pham
Posts: 104
Joined: Fri Aug 09, 2019 12:17 am

Re: No Salt Bridge

Postby Hannah Pham » Sat Feb 29, 2020 10:38 pm

The anode is losing electrons, making it gain a more positive charge, while the cathode is gaining electrons making it have a more negative charge.

Asha Agarwal 1E
Posts: 51
Joined: Fri Aug 30, 2019 12:16 am

Re: No Salt Bridge

Postby Asha Agarwal 1E » Sat Feb 29, 2020 11:03 pm

Since the anode is the reaction being oxidized, the electrons flow from the anode side to the cathode side, leaving behind positive ions on the anode side and more electrons (more negative charge) on the cathode side.


Return to “Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams”

Who is online

Users browsing this forum: No registered users and 1 guest