# Transfer of Electrons from One Point to Another

1. A redox reaction occurs when a solution of an oxidising agent is mixed with a solution of a reducing agent.
2. If the solution of the oxidising agent and the solution of the reducing agent are separated by an electrolyte in a U-tube, the redox reaction will still take place but the transfer of electrons will occur through the connecting wire.
3. The reducing agent undergoes oxidation with the loss of electrons. So, the carbon electrode that is immersed in the solution of the reducing agent becomes the negative cell terminal.
4. Electrons flow through the connecting wire to the carbon electrode that is immersed in the oxidising agent solution. The carbon electrode acts as the positive cell terminal.
5. The oxidising agent undergoes reduction with the acceptance of electrons.

### Guide to Solve Problems Related to the Transfer of Electrons Through a Distance

1. Oxidation always happens at anode.
2. Reduction always happens at cathode.
3. Anode is the negative terminal.
4. Cathode is the positive terminal.