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Salt Bridge?

Posted: Wed Feb 01, 2017 10:56 pm
by Mason_Aguila_2G
What is the purpose of a salt bridge in a galvanic cell?

Re: Salt Bridge?

Posted: Wed Feb 01, 2017 10:58 pm
by Pratyush Kandimalla 2O
The salt bridge completes the circuit hence allowing current to pass through the system. The wires allow movement of electrons. The salt bridge allows movement of counter ions from one side to the other.

Re: Salt Bridge?

Posted: Thu Feb 02, 2017 2:31 pm
by Katelyn Li 2J
To expand upon the previous reply, think of the diagram of the cell we've been looking at in class. On the anode side, Zn2+ ions are produced and on the cathode side, Cu2+ ions are used up. Without a salt bridge, the transfer of electrons from one reaction beaker to another would cause the charge to build up on one side, halting the reaction. A salt bridge allows for the transfer of Cl- ions, which keep both solutions neutral and enables the reaction to continue.

Re: Salt Bridge?

Posted: Sat Feb 04, 2017 11:49 pm
by Stephanie_Younan_3D
For a salt bridge, do we have to include the salts that we added into the shortened galvanic cell word format?