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NCERT Solutions Class 12 Chemistry - Chapter 2 Electrochemistry - PDF Download

JEE Mains & Advanced

The importance of Electrochemistry in the Board Examination of Class 12 Chemistry cannot be overstated. To ensure that students are adequately prepared for their board examinations and entrance examinations, eSaral has developed comprehensive NCERT solutions for Chapter 2 of Class 12 Chemistry, these solutions are structured in a step-by-step format to provide students with the answers to the various questions that may be posed in the examination.

Electrochemistry is a branch of chemistry that focuses on the relationship between chemical and electrical energy produced through a redox reaction, and how these two elements can be converted into one another. NCERT solutions for Class 12 are developed by the most qualified experts in the field. Essentially, these solutions are suitable for those students who are preparing for Class 12 examinations, JEE Advance, and other medical entrance examinations.

NCERT Solutions for Class 12 Chemistry Chapter 2 Subtopics

  • Electrochemical cells

  • Galvanic cells

  • Nernst Equation

  • Conductance of Electrolytic Solutions

  • Electrolytic Cells and Electrolysis

  • Batteries

  • Fuel Cells

  • Corrosion

Electrochemical cells: Electrochemical cells are devices that convert chemical energy to electrical energy or vice versa. An electrochemical cell can either generate electrical energy from chemical reactions taking place within it, or it can use the electrical energy it receives to facilitate chemical reactions within it.

Galvanic Cell: A galvanic cell, also called a voltaic cell, is an electrochemical device that converts chemical energy to electrical energy through spontaneous redox reactions. Most commonly, galvanic cells are used in batteries to provide electrical power to electronic devices.
A galvanic cell is composed of two semiconductor half-cells. Each half-cell contains an electrode immersed in a solution of electrolyte. The conductive pathway between the two half-cells allows the flow of electrons, resulting in an electric current.

Nernst Equation: In electrochemistry, the Nernst Equation refers to the mathematical relationship between the concentration and temperature of the cell potential of a non-standard electrochemical cell.

Conductance of Electrolytic Solutions: Conductance of Electrolytic Solutions is a measure of how well an electrolytic solution is able to carry an electric current. An electrolytic solution is created when an ionic compound dissolves in a solvent like water. This causes the ions in the solvent to separate and move through the solution. The ions with electric charges can carry an electric current through the solution. 

Electrolytic Cells and Electrolysis: Electrolytic cell and electrolysis are terms used in electrochemistry to describe the process by which a non-spontaneous chemical reaction is induced by an external electrical source. Electrolytic cells used to convert electrical energy into chemical energy.

Battery: A battery is an electrochemical device that stores and transfers electrical energy via redox reactions. A battery is a portable, self-contained power source that is widely used in a variety of applications, including small electronic devices, large-scale industrial, and automotive systems. A battery is composed of one or more electrical cells that are connected in series or in parallel to increase the total voltage or capacity.

Fuel Cells: A fuel cell is an electrochemical device that converts a fuel’s chemical energy into electrical energy (electricity) without being burned. Fuel cells work through a process called redox, which occurs when the fuel is in contact with an oxidizing agent (usually oxygen or air). The oxidizing agent is an electrolyte.

Corrosion: Corrosion is a chemical or electrochemical reaction between a metal and its environment. It’s an electrochemical reaction because it involves the exchange of electrons between a metal and a corroding medium. When a metal is exposed to oxygen, moisture, acid, or salts, corrosion occurs naturally.

Key Points to Remember in Electrochemistry:

Key points to remember in electrochemistry include:

  • Electrochemistry is concerned with redox reactions, which involve the transfer of electrons between species, resulting in changes in oxidation states.

  • An electrolyte is a substance that conducts electricity because it contains ions. Electrolytes play an important role in electrochemical reactions.

  • Electrodes are conducting materials in which redox reactions occur. The anode undergoes oxidation (loss of electrons) and the cathode undergoes reduction (gain of electrons).

  • An electrochemical cell is a device that converts chemical energy into electricity or vice versa. Electrochemical cells include galvanic cells, which produce electricity, and electrolytic cells, which use electricity to stimulate non-electrical reactions.

  • Cell potential (Ecell), also known as the anode to cathode voltage, is the voltage at which the redox reaction takes place in a cell.

  • Nernst's equation allows for the calculation of the cell potential in conditions other than standard conditions, taking into account the effect of concentrations and temperatures on the reaction.

  • As a reference electrode, the SHE has a value of 0.00V at all temperatures.

  • The Faraday's Laws of Electrolysis relate the amount of material deposited or released during electrolysis to the amount of electrical flux through the cell.

  • A fuel cell is an electrochemical device that converts a fuel’s chemical energy into electrical energy through a redox reaction. Fuel cells are used in generation of power and its transportation.

  • Corrosion refers to the degradation of metals as a result of interactions between metals and their environment, typically through the use of chemicals or electrochemical processes.

  • The process of electrolysis involves the use of electricity to initiate a non-explosive redox reaction. This reaction usually results in the breakdown of compounds.

  • Electrochemistry has numerous applications, including batteries, electroplating, corrosion prevention, electroanalytical techniques, and energy storage technologies.

Benefits of Class 12 Chemistry Chapter 2 NCERT Solutions

eSaral offers NCERT Solutions for class 12 chemistry chapter 2 electrochemistry. Benefits of class 12 chemistry chapter 2 ncert solutions are given below:

Accurate and detailed explanation: Good NCERT solutions provide clear and precise explanations for every question and concept, which helps students to understand the topic better and resolve any doubts they might have.

Coverage of entire syllabus: Reputable solutions for class 12 chemistry chapters usually include the entire syllabus, so students don’t miss any important topics while studying for exams.

Clarity of concepts: eSaral or other reliable platforms offer solutions to clarify concepts and help students to understand the subject matter better.

Practice Questions: Students can use the solutions to check their answers while they are doing homework or practice questions. This way, they can self-check their answers and find areas where more practice is needed.

Better exam preparation: NCERT Solutions help students to prepare better for exams. Students can familiarize themselves with question patterns and understand how to approach various types of problems.

Save time: Students can save time by having access to complete solutions. They don’t have to spend time searching for answers or explanations themselves.

Boost confidence: Students get a boost in confidence when they understand concepts clearly and can solve questions with confidence.

Strong foundation for competitive exams: NCERT Solutions provide students with a solid foundation for many competitive exams, where questions are frequently based on concepts that are covered in the NCERT textbooks.

Frequently Asked Questions

Question 1: What are the applications of electrochemistry?

Answer 1: There are many uses for electrochemistry, such as batteries and fuel cells for energy storage, electroplating, electrodeposition, corrosion prevention and control, sensors and biosensors, metal extraction, electrolysis, and industrial chemical production.

Question 2: what is electrochemistry?

Answer 2: Electrochemistry is the study of how electrical energy is converted into chemical energy. Basically, it's all about how redox reactions work and how electrons move around during chemical reactions.


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