Question

Explain the types of electrochemical cells.

Answer 1

There are two types of electrochemical cells. Electrolytic cell: In this type of cell, a nonspontaneous reaction, known as electrolysis, is forced to occur by passing a direct current from an external source into the solution. In such cells, electrical energy is converted into chemical energy. The anode of the electrolytic cell is positive and the cathode is negative.

Galvanic or voltaic cell: In a galvanic (voltaic) cell a spontaneous chemical reaction produces electricity. In these cells, chemical energy is converted into electrical energy. The anode of the galvanic cell is negative and the cathode is positive.