What are the salt bridge for Mg and Al in galvanic cell?
In a galvanic cell with magnesium (Mg) and aluminum (Al) as the two half-cells, a salt bridge is used to complete the circuit and maintain the charge balance in the cell.
The salt bridge can be made of a solution of a salt, such as potassium chloride (KCl), that allows ions to flow freely between the two half-cells without mixing the solutions. The purpose of the salt bridge is to enable the exchange of ions to maintain electrical neutrality in each half-cell and prevent the buildup of charge, which would interfere with the flow of electrons in the cell.
In the Mg-Al galvanic cell, the salt bridge facilitates the movement of ions between the Mg half-cell (anode) and the Al half-cell (cathode), allowing the cell to generate electrical energy.