# NCERT Solutions for Class 12 Chemistry Chapter 3 Electrochemistry

NCERT Solutions for Class 12 Chemistry chapter 3 Electrochemistry

Electrochemistry is the study of interconversion of chemical energy and electrical energy. This is an important chapter for both CBSE Board exam as well as competitive exams. It carries 5 marks in the Board exams. The devices where these conversions are takes place are known as cells. In this chapter, there are 18 questions. The step-by-step  NCERT Solutions for Class 12 Chemistry chapter 3 Electrochemistry are prepared by our subject experts to clear students doubts.

After completing the NCERT Class 12 Chemistry chapter 3 Electrochemistry, students will be able to describe an electrochemical cell, differentiate between electrolytic and galvanic cells, apply Nernst equation for calculating the emf of galvanic cell, also able to  derive relation between standard potential of the cell, Gibbs energy of cell reaction and its equilibrium constant and many more. The solutions of Class 12 Chemistry chapter 3 Electrochemistry will also help students to understand Kohlrausch law and its application.

Important points and formulas of  NCERT Class 12 Chemistry chapter 3 Electrochemistry-

1. Conductance(G) is the reciprocal of resistance (R) and specific conductance or conductivity(k) is inverse of resistivity$\dpi{100} (\rho )$

$\dpi{100} \\G=\frac{1}{R}=\frac{1}{\rho }\left ( \frac{a}{l} \right )\\k=G\left ( \frac{l}{a} \right )$

2. l/a is called the cell constant of conductivity cell.

3. Equivalent Conductivity is defined as the conductance of a solution containing 1g of an electrolyte.

$\dpi{100} \\ \Lambda _{eq}=K\times V\\$

4. Nerst equation

aA+bB $\dpi{100} \rightarrow$ cC+dD

$\dpi{100} E_{cell} = E_{cell}^{o}-\frac{0.0591}{n}log\frac{\left [ C \right ]^{c}\left [ D \right ]^{d}}{\left [ A \right ]^{a}\left [ B \right ]^{b}}$

Topics and Sub-topics of NCERT Class 12 Chemistry Chapter 3 Electrochemistry-

3.1 Electrochemical Cells

3.2 Galvanic Cells

3.3 Nernst Equation

3.4 Conductance of Electrolytic Solutions

3.5 Electrolytic Cells and Electrolysis

3.6 Batteries

3.7 Fuel Cells

3.8 Corrosion

## NCERT Solutions for Class 12 Chemistry Chapter 3 Electrochemistry- Exercise Questions

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## NCERT Solutions class 12 – Chemistry

 Chapter 1 The Solid State Chapter 2 Solutions Chapter 4 Chemical Kinetics Chapter 5 Surface Chemistry Chapter 6 General Principles and Processes of isolation of elements Chapter 7 The P-block elements Chapter 8 The d and f block elements Chapter 9 Coordination compounds Chapter 10 Haloalkanes and Haloarenes Chapter 11 Alcohols, Phenols, and Ethers Chapter 12 Aldehydes, Ketones and Carboxylic Acids Chapter 13 Amines Chapter 14 Biomolecules Chapter 15 Polymers Chapter 16 Chemistry in Everyday life

## NCERT Solutions for Class 12- Subject wise

 NCERT solutions for Class 12 Biology NCERT solutions for Class 12 Maths NCERT solutions for Class 12 Chemistry NCERT solutions for Class 12 Physics