Electrochemistry is the popular branch of chemistry to deal with the relationship between chemical energy and electrical energy. This chemical energy is produced due to a redox reaction and is convertible onto electrical energy. This chapter also deals that how they can be converted into each other. After its proper study student will be able to build a strong concept which will help them in their examination as well as during further study. Therefore Class 12 chemistry chapter 3 formulas are essential for the theoretical and numerical ability of students, useful for physical chemistry.
The chapter starts with the description of an electrochemical cell and the difference between galvanic and electrolytic cells. They will learn to apply the Nernst equation for calculating the emf of the galvanic cell and hence to define the standard potential of the cell. Students will learn the standard of hydrogen electrolyte consists of the oxidized nitrogen and carbide. Here the positive value of the standard dimension is also measured equally with half-reaction. Metals like platinum and zinc are mixed with the electrolyte. This combination of the mixture persists in making the solutions.
This chapter also contains the derivations of the relationship between the standard potential of the cell, Gibbs energy of cell reaction, and its equilibrium constant. It describes the method for measurement of conductivity of electrolytic solutions and hence calculation of their molar conductivity. Justify the variation of the molar conductivity of solutions with a change in their concentration. The student will understand the quantitative aspects of electrolysis. Chapter will describe the construction of some primary and secondary batteries and fuel cells.
Some main subtopics are Electrochemical Cells, Galvanic Cells: Measurement of Electrode Potential, Nernst Equation, Equilibrium Constant from Nernst Equation, Electrochemical Cell and Gibbs Energy of Reaction, The conductance of Electrolytic Solutions, Measurement of the Conductivity of Ionic Solutions, Variation of the Conductivity, Molar Conductivity with Concentration, Electrolytic Cells and Electrolysis, Products of Electrolysis, Batteries: Primary Batteries and Secondary Batteries, Fuel Cells and Corrosion.
The chapter also deals with the technology of Electrochemistry. This study helps to form the eco-friendly technologies. It is a vast interdisciplinary topic of the chemistry. This chapter covers the different other issues related to the standard potential and other elementary aspects. Therefore Electrochemistry is the study of the production of electricity from the energy released during the spontaneous chemical reactions. The theoretical and chemical reactions of the energy flowing functionality is the key point of this chapter.
Resistive conductivity and molar conductivity of ionic solutions both are also the part of this chapter. The conductivity of ionic solutions is helpful to define the resistivity of the molar conductivity. Students will learn the law of Kohlrausch in this regard. Students will be capable to understand the process of electrolysis and its quantitative application. The chapter is describing the construction of primary and secondary cells. Students will study a large number of fuel and battery disposal limits.
Some other important inclusions of this chapter are a measurement of Electrode Potential, Conductance of Electrolytic Solutions, Measurement of Conductivity, Variations of Conductivity, Fuel Energy Dynamism, etc. The chapter also includes another important topic corrosion as part of electrochemical technology.