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JEE Advanced Electrochemistry Important Questions

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Last updated date: 17th Apr 2024
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Download Free PDF of JEE Advanced Important Questions of Electrochemistry provided by Vedantu

The most Important Questions on Electrochemistry JEE Advanced are given here as free PDF downloads. These questions and solutions are created by the best minds in the field of chemistry. The Important questions on Electrochemistry JEE Advanced aims to help you to solve the most complicated sums with simple and easy steps and with utmost accuracy. The problems given here are created after a detailed study of the entire syllabus and the question pattern of numerous years.


Category:

JEE Advanced Important Questions

Content-Type:

Text, Images, Videos and PDF

Exam:

JEE Advanced

Chapter Name:

Electrochemistry

Academic Session:

2024

Medium:

English Medium

Subject:

Chemistry

Available Material:

Chapter-wise Important Questions with PDF


Before we proceed to solving some questions based on this topic, let us first take a look at a few things to remember while studying Chemistry in particular. It is often looked at by students as one of the easier subjects and this can lead to a casual attitude both while preparing for and solving the paper. Hence, some things to make note of are:


  • Giving the subject equal importance as that of Mathematics and Physics.

  • When it comes to reactions, students shall write them down while preparing. Simply memorizing them or reading them won't guarantee that they’ll retain them.

  • Understanding the process used to get to an answer is often more important than the actual answer. This makes you curious about the subject and eventually better students.

  • Making a proper study plan by dividing the subject into three parts: Physical, Organic and Inorganic Chemistry. Each of them have different requirements that shall be dealt with in a unique manner.

  • Students shall also make it a habit to read the question twice before beginning to solve it. It is often found that students misread a word or two while reading the question which changes the entire course of the solution.

  • Making your own notes that consist of important formulas, key highlights and other essential things will help you immensely during revision.


Ace Your JEE Advanced Chemistry Electrochemistry Exam with Our Practice Papers

Our JEE Advanced Chemistry Electrochemistry practice paper are designed to help you score high in the exam. With targeted questions and in-depth solutions, these papers will boost your preparation and help you secure a top score. Download the PDFs from Chemistry Electrochemistry practice papers.

Competitive Exams after 12th Science

About JEE Advanced Electrochemistry provided by Vedantu

Electrochemistry is a very important part of Physical chemistry. Students can easily expect over 1 - 2 questions from this chapter and its related topics. And the questions most often tend to be only numericals. With various electrode equations and cell equations in this chapter, you need to take up multiple revision sessions to master in the same. The chapter also has a lot of theory regarding various types of cells. However, the related equations are more important from the JEE exam point of view.

  • Corrosion

  • Electrode potential Ecell Nernst equation and ECS

  • Cell constant and electrochemical cell

  • Conductor and conductance

  • Faraday’s law of electrolysis

  • Electrolytes and electrolysis

  • Molar conductivity

  • Galvanic Cell

  • Standard state emf of a cell and its characteristics

 

The chapter of electrochemistry is a very essential part of chemistry syllabus. It is necessary to solve the Electrochemistry important Questions JEE Advanced as it covers the entire syllabus and all it important subtopics.  These questions are curated in such a way so as to help students get an understanding of the kind of questions that could be asked in the exams. Also, the solutions are written to help students understand the various short cut techniques with which they can get the right answer with maximum accuracy.

FAQs on JEE Advanced Electrochemistry Important Questions

1. What is ‘Electrochemistry’, in simple terms?

Electrochemistry, which when split into two parts gives us ‘electricity’ and ‘chemistry’, is the branch of chemistry that studies the effect of electricity when it is passed through any chemical substance, and subsequently the conversion of electrical energy into chemical energy and the other way around. A cell or a battery, which we use on a daily basis, essentially works on the principles of Electrochemistry. The electrochemical reactions that take place in these cells are not only energy efficient, but also cause less pollution in comparison to other methods of generation of electricity.

2. Explain the Nernst equation briefly.

The Nernst equation, which is used in a wide variety of applications such as determining solubility of products, Potentiometric Titrations, or even measuring the pH of a substance, gives us the relationship between standard electrode potential of a particular electrode and its electrode potential in other different situations. The equation also helps predict the spontaneity of an electrochemical reaction, or to calculate the Gibbs free energy. 


Example:


Consider the following chemical reaction:


Mn+ (aq) + ne → M(s)


Then, the Nernst equation can be stated as:


\[\frac{(Mn+)}{(M)}\] =  E° \[\frac{(Mn+)}{(M)}\] RTnF ln\[\frac{(M)}{(Mn+)}\]


To know more about the application of the formula as well as other key details, we recommend you to check our article dedicated to the Nernst equation.

3. What are different types of electrochemical cells?

A cell that is capable of generating electricity from a chemical process, or one that gives rise to a chemical change by passing electricity is known as an electrochemical cell. These cells work upon the principles of a redox (or Oxidation-Reduction) process. Depending upon the way they’ve been built as well as the way in which they function, there are different types of electrochemical cells such as:

  1. Electrolytic Cell: In an electrolytic cell, conversion from electrical energy into chemical energy takes place, with the help of a non-spontaneous reaction.

  2. Galvanic Cell: Exactly the opposite of electrolytic cell, a galvanic cell uses redox reaction to convert chemical energy into electrical energy.

4. State and explain Faraday’s laws of electrolysis.

Students wanting to take an in depth look about the topic can click here for the dedicated article on Electrolysis. Before jumping directly into the two laws, let's first understand a few basic terms. An electrolyte is any liquid solution (usually a salt solution of a metal) that is capable of allowing the flow of charges (i.e. electrons). Electrolysis is essentially the use of electrical energy to bring about a chemical change. An electrode is nothing but a point where electrons either leave or enter the electric circuit. Now moving on to the first law, it can be stated as: “The mass of a substance deposited at any electrode is directly proportional to the amount of charge passed.” Thus,

m ∝ Q ----------(1)

where m = mass

Q = Amount of charge passed

Further, the second law can be stated as: “the mass of a substance deposited at any electrode on passing a certain amount of charge is directly proportional to its chemical equivalent weight”

Mathematically, it would be expressed as:

w ∝  E

where w = mass of the substance

and E = equivalent weight

5. What is meant by a ‘salt bridge’ and what are its functions?

Like the name suggests, a salt bridge basically acts as the ‘bridge’ between two half cells, one representing the oxidation half while the other representing reduction half. Alternatively, it can also be called as a junction that connects the anodic and cathodic compartments of an electrolytic solution. A salt bridge is usually made up of strong electrolytes like that of KCl, AgNO3, and more. Salt bridges are generally more common in galvanic cells like voltaic cells or Daniel cells. The absence of a salt bridge will give rise to accumulation of negative charges on one half of a cell, and positive charges on the other half, which eventually brings the reaction to a halt.


As you can probably tell by now, Vedantu offers dedicated articles not just for individual topics from each subject, but also for many of the important laws, derivations, equations, and theories that are found within the chapter. This can help the students by providing them with everything that they need in order to fully master the particular concept and make sure that they do not make any errors while solving a question based on it. With that, we have successfully solved some important questions based on Electrochemistry and we sincerely hope students are feeling confident about it. Just for a reminder, students must note that a good score in so many tests should not make them complacent, while a poor score should not discourage them either.