What are Galvanic cells? Explain the working of Galvanic cell with a neat sketchtaking Daniel cell as example.AP,TS-15

What are Galvanic cells? Explain the working of Galvanic cell with a n

1.	What are Galvanic cells? Explain the working of Galvanic cell with a neat sketchtaking Daniel cell as example.AP,TS-15
Answer» Galvanic cells, also known as voltaic cells, are electro chemical cells in which spontaneous oxidation-reduction reactions produce electrical energy.The Daniell Cell is divided into 2 half-cells connected by a wire and a salt bridge to complete the electrical circuit..In the Daniell cell, copper and zinc electrodes are immersed in a solution of copper (II) sulfate (CuSO4 (aq)) and zinc (II) sulfate (ZnSO4 (aq)) respectively. The two half cells are connected through a salt bridge. Here zinc acts as anode and copper acts as cathode.At the anode, zinc undergoes oxidation to form zinc ions and electrons. The zinc ions pass into the solution. If the two electrodes are connected using an external wire, the electrons produced by the oxidation of zinc travel through the wire and enter into the copper cathode, where they reduce the copper ions present in the solution and form copper atoms that are deposited on the cathode.