The branch of physical chemistry which deals with the study of the relationship between electricity as a quantitative and measurable phenomena, and chemical change, is referred to as electrochemistry. One of the major areas of study within this field is redox reactions. These reactions involve the transfer of electrons between molecules or atoms. Electrochemistry is used to describe overall reactions in which the separate redox reactions are connected by an external electric circuit and an intervening electrolyte. It also deals with balancing redox reactions. This book outlines the concepts and applications of electrochemistry in detail. While understanding the long-term perspectives of the topics, it makes an effort in highlighting their impact as a modern tool for the growth of the discipline. This book is appropriate for students seeking detailed information in this area as well as for experts.