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JEE Main - Chemical Kinetics Notes (Free PDF Download)

Last updated date: 25th Jul 2024
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Download Chemical Kinetics Notes With Important Topics: Score High Marks In JEE Main 2025

Get ready to reach your success in JEE Main 2025 with Chemical Kinetics Notes that focus on important topics. These notes are your key to achieving high marks in JEE Main exams. These revision notes are made by master teachers at Vedantu, who know just what you need. These notes are in the compact form of  Chemical Kinetics and cover everything you should know about the exam. Best part? You can download them for FREE in PDF format.


JEE Main Revision Notes


Text, Images, Videos and PDF


JEE Main

Chapter Name:

Chemical Kinetics

Academic Session:



English Medium



Available Material:

Chapter-wise Notes with PDF

Students must consider the Chemical Kinetics Notes PDF as a crucial resource because this chapter explains the study of reaction rates and the factors that influence them. You can understand the significance of Chemical Kinetics in JEE Main by checking the information in the table provided below.

Year Wise Weightage of Questions: JEE Main Chemical Kinetics

Sl. No.


Average No. Of Questions Asked

Marks per Question

Total Marks





















To reach your goals, prepare for your JEE Main 2025 exams using Vedantu’s Chemical Kinetics Notes PDF andThe JEE Main Chemistry Syllabus 2025.

Competitive Exams after 12th Science

JEE Main 2025: What to Focus in Chemical Kinetics?

A few topics in the Chemical Kinetics will help you score in JEE Main 2025. Knowing the list of those topics will make it easy for you to prepare and focus on the JEE Main exam.  You can check the list of important topics from the Chemical Kinetics below. Unravel the key concepts, fundamental theories, and vital formulas shaping your success in Chemical Kinetics for JEE Main 2025. 

  • Rate of Reaction and Rate Laws

  • Order of Reaction

  • Rate Constant and Rate Equation

  • Integrated Rate Laws

  • Half-life and Reaction Order

  • Factors Affecting Reaction Rate

  • Collision Theory

  • Activation Energy and Arrhenius Equation

  • Reaction Mechanisms

  • Elementary Steps and Reaction Intermediates

  • Rate-Determining Step

  • Catalysis and Catalysts

  • Enzyme Kinetics

  • Reaction Kinetics in Industry

  • Reaction Kinetics in Biological Systems

JEE Chemistry Notes: Explore Chapters with 2025 Links

Explore structured JEE 2025 Chemistry Notes through easily accessible chapter-wise links. Delve into crucial subjects, comprehend fundamental ideas, and enhance exam readiness. Equip yourself with an advantage using these targeted notes.

Why Chemical Kinetics Notes are Important In JEE Main Preparation? 

Chemical Kinetics involves examining reaction mechanisms, reaction orders, and rate laws to understand how concentration, temperature, and catalysts impact reaction rates. It holds a significant importance of about 1.33% in the JEE Main. Expect direct questions from this part, making it a scoring section. Let's explore why this chapter holds such importance:

Introduction to Chemical Kinetics:

  • Imagine a bustling ballroom where molecules are the dancers, and reactions are the intricate choreography. Welcome to the captivating world of chemical kinetics, where we unravel the speed and pathways of reactions.

The Need for Speed:

  • Ever wondered why some reactions happen in the blink of an eye while others take ages? Chemical kinetics is the science of understanding reaction rates - how fast or slow reactions occur.

Reaction Rate Expressions:

  • Just as dancers follow specific moves, chemical reactions have their own rhythms. Reaction rate expressions showcase how the concentration of reactants influences the speed of reactions.

Factors Influencing Rates:

  • Let's add some spice to our dance! Temperature, concentration, catalysts, and surface area are like music beats that dictate the pace of reactions. Adjust these, and the dance changes.

Reaction Mechanisms:

  • Behind the scenes, dancers practice steps. Similarly, reactions often occur through multiple steps known as reaction mechanisms. Exploring these intricate routines helps us predict reaction pathways.

Order and Molecularity:

  • Imagine choreography with different dance groups. The order of a reaction defines how the concentration of reactants influences the rate. Molecularity reveals the number of molecules involved in a collision.

Rate Laws and Rate Constants:

  • Here's the cool part: we can write equations that capture how rate changes with concentrations. Rate laws and rate constants provide the mathematical groove for reactions.

Half-life: The Dance's Tempo:

  • Just like music tempo, reactions have a rhythm. Half-life is the time dancers take to leave the stage. It's a fascinating concept that varies with reaction orders.

Catalysts: Reaction Choreographers:

  • In our ballroom, catalysts are the dance choreographers. They speed up reactions without getting consumed. Catalysts provide alternate routes for reactions, making them efficient and thrilling.

Reaction Energy and Activation Energy:

  • Dance requires energy. Reactions, too, need energy to start. Activation energy is the initial push dancers need to kickstart the performance. It's like the first step on the dance floor.

Reaction Mechanism Puzzle:

  • Imagine piecing together a dance routine from scattered steps. Similarly, understanding reaction mechanisms is like solving a puzzle. Each step adds to the overall beauty of the dance.

Chemical kinetics isn't just about reactions; it's a dynamic journey into the heart of molecular movement. From understanding the beats of reaction rates to deciphering the intricate steps of mechanisms, this chapter transforms you into a molecular choreographer. So, put on your chemistry dancing shoes and let's dive into the rhythmic world of chemical kinetics!

Power of Equations: How Formulas Amplify Revision Note Learning

Equations aren't just symbols; They're your key to solving problems in Chemistry. By grasping formulas, you'll tackle complex concepts effortlessly and boost your confidence. Dive into the world of equations along with JEE Main Chemistry Revision notes and amplify your study sessions. Explore our Chemistry formula pages to start your preparation journey of JEE Main today!

Below are some of the important formulas of Chemical Kinetics:


Chemical Kinetics


Rate of Reaction

$\text{Rate} = \frac{\Delta [\text{Reactant}]}{\Delta t} = -\frac{\Delta [\text{Product}]}{\Delta t}$

Rate Law Expression

$\text{Rate} = k [\text{A}]^m [\text{B}]^n$

Integrated Rate Law for First Order Reaction

$\ln \left( \frac{[\text{A}]}{[\text{A}_0]} \right) = -kt$


Half-Life of a First Order Reaction

$t_{\frac{1}{2}} = \frac{0.693}{k}$


Integrated Rate Law for Second Order Reaction

$\frac{1}{[\text{A}]} = kt + \frac{1}{[\text{A}_0]}$


Half-Life of a Second Order Reaction

$t_{\frac{1}{2}} = \frac{1}{k[\text{A}_0]}$


Arrhenius Equation

$k = A e^{-\frac{E_a}{RT}}$


Catalyst Effect on Reaction Rate

$\text{Rate with Catalyst} > \text{Rate without Catalyst}$

Explore our Chemistry formula pages to start your preparation journey of JEE Main today!

Explore Further: Supplementary Resources for JEE Main 2025 Chemical Kinetics

Looking to enhance your JEE Main 2025 Chemical Kinetics preparation? Explore these Important materials:

  • Practice Papers: Enhance your abilities through focused practice.

  • MockTests: Replicate exam scenarios for increased confidence.

  • Sample Papers: Get acquainted with question formats.

  • Previous Year Question Papers (PYQPs): Understand exam patterns.

Use these tools to improve comprehension and test-taking skills, boosting your JEE Main 2025 performance!

Access the supplementary resources for JEE Main 2025 here:

Excel in your Exams with Vedantu’s JEE Main Notes

In the journey to excel in your exams, Vedantu’s JEE Main Notes stand as your steadfast companions. These notes simplify complex topics, reinforce your understanding, and prepare you comprehensively. With Vedantu’s guidance, you’ll navigate exams with confidence and achieve success. Embrace the power of JEE Main Notes – download them today to elevate your preparation and reach new heights of accomplishment in your exams. Your path to excellence starts here, with Vedantu’s JEE Main Notes. Get your FREE notes now and seize success!

FAQs on JEE Main - Chemical Kinetics Notes (Free PDF Download)

1. What are the most important topics included in Chemical Kinetics Notes for JEE Main 2025?

The following crucial subjects are covered in the Chemical Kinetics Notes for JEE Main 2025:

  • Rate of Reaction

  • Rate Law and Rate Constant

  • Order of Reaction

  • Half-life and First-Order Reactions

  • Arrhenius Equation

  • Activation Energy

  • Collision Theory

  • Factors Affecting Reaction Rates

  • Catalysis

  • Integrated Rate Equations

2. What is the weightage of Chemical Kinetics Notes for JEE Main 2025?

The weightage of the Chemical Kinetics chapter in JEE Main 2025 is around 5-8%. This means that there are typically 1-2 questions asked from this chapter.

3. Which is the easiest topic of JEE Main 2025 Chemical Kinetics Notes?

The introduction to reaction rates and the concept of rate laws is often considered one of the easiest topics in JEE Main Chemical Kinetics. Understanding how reaction rates are expressed and the factors influencing them lays the foundation for more complex kinetic concepts in the subject.

4. What are the Chemical Kinetics in the context of JEE Main 2025?

Chemical Kinetics, a topic in JEE Main 2025, explores the rates of chemical reactions and factors influencing them. It involves the study of reaction mechanisms, rate laws, and reaction orders. Understanding this field is crucial for predicting and controlling reaction rates, which is important in various industrial and biological processes.

5. How can I apply the Chemical Kinetics to solve JEE Main problems?

To solve JEE Main problems involving Chemical Kinetics, start by understanding rate laws, reaction orders, and rate-determining steps. Apply concepts of integrated rate equations and half-life calculations. Use initial rate data and rate constant determination. Practice solving problems to grasp the application of reaction mechanisms and factors affecting reaction rates effectively.

6. Are there any common mistakes students make in Chemical Kinetics problems?

Common mistakes in Chemical Kinetics problems include misinterpreting reaction orders, neglecting units, mishandling rate constants, and misunderstanding the rate-determining step. Students might also overlook temperature effects on reaction rates and fail to consider catalyst influences. Careful attention to details and concepts is crucial for accurate solutions.

7. Are JEE Main 2025 Chemical Kinetics  Notes recommended for last-minute revision?

Yes, JEE Main 2025 Chemical Kinetics Notes are highly recommended for last-minute revision. These notes condense essential concepts, formulas, and key points, making them ideal for quick recaps before the exam. They help reinforce your memory, summarize crucial topics, and provide a swift overview of the Chemical Kinetics chapter, ensuring you're well-prepared for the exam.

8. What are the expected difficulty level of JEE Main Chemical Kinetics questions?

The difficulty level of JEE Main questions on Chemical Kinetics can vary. Generally, they range from moderate to challenging. Students are typically tested on concepts related to oxidation-reduction reactions, balancing chemical equations, electrochemical cells, Nernst equation, and more. Preparation should cover both theoretical understanding and problem-solving skills.