The aluminum metals
The electrode that is oxidized in a galvanic cell ~
aluminum oxidized, zinc reduced
In a galvanic cell with silver and nickel electrodes, the nickel electrode will be oxidized. Oxidation occurs at the anode, where electrons are released as nickel atoms lose electrons and form nickel ions. Silver ions from the other electrode will capture these electrons as the reduction reaction occurs at the cathode.
Mg(s)
In a galvanic cell, the anode is the negative electrode.
In a galvanic cell, the cathode is the positive electrode.
In a galvanic cell made with silver and nickel electrodes, the nickel electrode undergoes oxidation as it loses electrons, which travel through the external circuit to the silver electrode where reduction occurs. This flow of electrons generates an electric current in the cell.
The standard electrode potential of aluminum is -1.66 V. This means that in a standard electrochemical cell, aluminum tends to be oxidized (lose electrons) rather than reduced.
The electrode with the highest oxidation potential
the nickel metal
Zinc is the anode.
In an electrolyte cell with aluminum and gold electrodes, oxidation occurs at the aluminum electrode. Aluminum, being more reactive than gold, donates electrons and is oxidized to form aluminum ions (Al³⁺). The gold electrode, on the other hand, typically acts as the cathode, where reduction occurs as it accepts the electrons released from the aluminum. This movement of electrons generates an electric current in the electrolyte cell.