DANIEL CELLS

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DANIEL CELL
 Among the galvanic cell when cell is designed in such a manner to make the use of spontaneous reaction between zinc and copper ions to produce an electric current, the cell is called Daniel cell.
 In Daniel cell the anode is made up of Zn rod dipped in solution of ZnSO4 and cathode is made up of Cu rod dipped in CuSO4 solution.
 Current in the external circuit flows from Cu electrode to Zn
 electrode +ve to – ve electrode
 Zn rod losses its mass while Cu rod gains it mass and the concentration of ZnSO4 solution increases while that of Cu SO4 decreases.
 Zn metal is oxidized at anode and Cu+2 ions are reduced at cathode.
 Oxidation occurs in oxidation half cell and reduction occurs in reduction half cell.