Pesticides have been widely and increasingly used to control agricultural pests such as weeds, molds, rodents, and plant pathogens. there is a great public concern on the environmental fate of pesticides because the excessive application of pesticides has led to widespread contamination of soil, air, and water causing adverse effects on the environment and ecology
Electrolysis: is the process in which electrical energy is used to drive a non spontaneous chemical reaction. an electrolytic cell is an apparatus for carrying out electrolysis. processes in an electrolytic cell are the reverse of those in a galvanic cell. the standard potential of any galvanic cell is the sum of the standard half-cell potentials for the oxidation and reduction half-cells. e°cell = e°oxidation + e°reduction standard half-cell potentials are always quoted as a reduction process. the sign must be changed for the oxidation process.