chemistry topic stiochiomentry

Stoichiometry JEE involves a thorough understanding of the concepts. It is a basic chapter of JEE Chemistry, mostly the first chapter that you might have studied when you started JEE preparation. Questions asked in JEE may be of moderate difficulty. However, there can be easy as well as difficult questions too. Furthermore, concepts from stoichiometry are used in various important chapters like Equilibrium or Thermodynamics.

A number of questions have been asked in recent years from this chapter in JEE Advanced, in the form of Matrix-Match Type Questions and Paragraph Type Questions. Sometimes, concepts of Stoichiometry are very useful in solving questions from other topics such as Solutions, Energetics etc. At least two questions have been asked every year from this topic in JEE Mains.

Another important topic of Stoichiometry JEE is ‘Redox Reactions’. Problems asked from this topic in JEE are mostly of two types – identification of the type of reaction, reducing agent, oxidizing agent, and determination of oxidation state.

Stoichiometry JEE: Important Books

• Studying from best books of JEE Main (https://magoosh.com/jee/jee-study-materials/jee-books/best-books-jee-main/) and JEE Advanced (https://magoosh.com/jee/jee-study-materials/jee-books/best-books-jee-advanced/) is highly recommended. Some of them are listed below:

  
  

• NCERT Textbook: You should be comfortable with each and every formula of Stoichiometry given in NCERT. Most of the questions are asked directly in JEE Mains without any twists so you should mug up each and every formula.
• Numerical Chemistry by P. Bahadur: One of the best books for Stoichiometry, and has a good theory including a large number of solved examples. It has varieties of numerical problems on ‘mole concept’ and ‘equivalent concept’ which will make numerical approach very strong and hence, efficiently help you in solving questions.
• Physical Chemistry by R. C. Mukherjee: It is one of the best books for practice in JEE preparation when it comes to ‘numerical problems’. It has a good number of questions on Stoichiometry and mole concept. All the topics related to the syllabus of JEE are well covered. This book builds your concepts from very basic level to advanced level.
• To complete your preparation, you must solve the past year questions that have been asked in JEE Mains/Advanced. Refer to this book – 39 years Chapterwise Solved Paper by Arihant Publications (http://amzn.to/2uu8IK3) .

Stoichiometry JEE: Important topics

• Laws of chemical combination, Mole concept, Equivalent concept, Elemental Analysis (Finding molecular and empirical formula of compound)
• Principle of Atom Conservation (POAC)
• The Limiting Reagent and The Yield of Product (Percentage Yield)
• Concentration of solution in different forms %(w/w) weight by weight, %(w/v) weight by volume, %(v/w) volume by weight, %(v/v) volume by volume.
• Concentration terms such as Molarity, Molality, Normality, Formality, Mole fraction etc.

Stoichiometry JEE: Some Basic Tips

• Don’t ever assume that if have you understood the theory part well then you will be able to solve every problem of that topic. This is because question-solving is also a part of learning the concepts well. You need not worry if you are facing problems in solving them. Just clear all your doubts from your teacher or friends and try again. You may refer theory part from any standard book such as NCERT or R. C. Mukherjee.
• Lots of practice on numerical problems will help you to overcome the fear of Stoichiometry that most of the students have. This will not only develop more interest but also help to master the theory part. Remember that without practice, it will be difficult to fully hold the concepts. Practice a variety of questions, to get the idea of the kind of problems you may get in exams.
• Cover all the topics properly. Start from easy problems and then gradually increase the level of difficulty. Try to solve by understanding the concepts behind it. Do not leave any topic, even if you feel a topic to be difficult do not leave it, instead try to learn fundamentals, definitions, concepts & formulae.
• From this chapter, the problems asked majorly include mole, mass & volume questions involving titration and the knowledge of the basic equation for titration i.e. N1V1=N2V2.