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During the lecture, Professor Lavelle used an example to explain the the cathode needed an electrode, so we used an inert conductor to transfer electrons. How do we know if we should include an electrode in our reaction, and why is it needed?
The electrons flow from the anode to the cathode, flowing through the electrodes. In the case of the silver nitrate battery, the (Ag -> Ag+) anode dissolves into a liquid solution of NO3-, forming the liquid compound AgNO3, while the electrons are sent through the anode to the cathode, and the Ag+ in solution turns to Ag and builds up as a solid on the cathode.
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