Electrolysis The conductivity and electrolysis occur according to the nature and attachment of the conductor. When electrolysis of different electrolytic substances is done in molten state and solution, different products are found in anodes and catheters according to the nature of the material. For example, when an electric charge is applied to molten salt, the metal in the cathode is released and the negative ion in the anode is released. When an electric charge flows in an aqueous solution - ( i) if the metal is located above H 2 in the activation series , then H 2 is found in the cathode , (ii) if the metal position is below H 2 , then metal is produced in the cathode , Aqueous solutions are used but halogen is released in the anode but oxygen is found in the anode in the case of other negative ions. So the question is, what can be obtained by electrochemical analysis of salts of moderately active metals (eg Zn) ? If the concentration of the solution is quite high in the north, only metal is found. However, in the case of very light solutions, H2 is mainly released . And in the middle of this density, both metal and H 2 are found.