Page 1 of 1

Salt Bridges-won't they dissolve?

Posted: Sun Feb 24, 2019 9:24 pm
by Kathryn 1F
I am confused. how does the salt bridge not just dissolve in the aqueous solutions on either side of the cell, making it useless?

Re: Salt Bridges-won't they dissolve?

Posted: Sun Feb 24, 2019 9:35 pm
by Cole Elsner 2J
The salt bridge isn't actually made up of salt itself. It's tubing with gel inside to provide electrical contact between the anode and the cathode.

Re: Salt Bridges-won't they dissolve?

Posted: Mon Feb 25, 2019 1:52 am
by Matthew Choi 2H
LOL. The salt bridge provides no other purpose than to allow the free flow of ions from each side of the cell to prevent the polarization of one side that would stop the reaction from occurring. It's not made of salt so it doesn't change the concentration of either solution.

Re: Salt Bridges-won't they dissolve?

Posted: Mon Feb 25, 2019 10:17 am
by deepto_mizan1H
The salt bridge essentially helps to prevent charge accumulation on either side (which would nullify the battery system). Since it is made out of tubing with gel, it will not chemically interact with the cell. It allows the charges to move, and to keep the cell going.

Re: Salt Bridges-won't they dissolve?

Posted: Mon Feb 25, 2019 10:19 am
by Jordan Lo 2A
A salt bridge is made of ions that flow into the solutions produced by the oxidation/reduction to prevent charge build-up, allowing electrons to continue flowing between the two cells

Re: Salt Bridges-won't they dissolve?

Posted: Mon Feb 25, 2019 1:42 pm
by Karishma_1G
The salt bridge isn't actually made out of salt. It is a tube with ions inside to prevent the charge build-up during the redox reaction. I believe that without a salt bridge, a positive charge would build up on the anode side and a negative charge on the cathode side which would preventing the reaction from occurring.