A2 Chemistry (Electorchemical Cell"
In an electrochemical cell what is the purpose of the salt bridge.
I know the definition by heart,"to complete the circuit and allow movement of ions", but I don't understand why ions need to move from one half cell to another when all that's needed for reduction and oxidation to occur is the movement of electrons which is already dealt with by an external circuit.
I'm so confused someone please clarify
I know the definition by heart,"to complete the circuit and allow movement of ions", but I don't understand why ions need to move from one half cell to another when all that's needed for reduction and oxidation to occur is the movement of electrons which is already dealt with by an external circuit.
I'm so confused someone please clarify
Original post by Lone Vindicator
In an electrochemical cell what is the purpose of the salt bridge.
I know the definition by heart,"to complete the circuit and allow movement of ions", but I don't understand why ions need to move from one half cell to another when all that's needed for reduction and oxidation to occur is the movement of electrons which is already dealt with by an external circuit.
I'm so confused someone please clarify
I know the definition by heart,"to complete the circuit and allow movement of ions", but I don't understand why ions need to move from one half cell to another when all that's needed for reduction and oxidation to occur is the movement of electrons which is already dealt with by an external circuit.
I'm so confused someone please clarify
Moving this to the chemistry section for you
oh....hadn't noticed it was in the wrong section....you know,first post and all
Original post by Lone Vindicator
oh....hadn't noticed it was in the wrong section....you know,first post and all
Don't worry about it
it wasn't necessarily in the wrong section as such, but you'll generally get a better/quicker answer in this specific section Posted from TSR Mobile
So what is the purpose of the salt bridge if it has no function in completing the circuit
Original post by Lone Vindicator
So what is the purpose of the salt bridge if it has no function in completing the circuit
The salt bridge completes the circuit and prevents build up of charge in either half-cell by allowing ions to flow from one side to the other.
Original post by Lone Vindicator
So what is the purpose of the salt bridge if it has no function in completing the circuit
It does. Please try to draw a system and see where does the current flow. Single wire is half of the loop only, salt bridge is the other half.
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