CHEMICAL EQUILIBRIUM
Chemical Equilibrium is the most important and high weightage chapter in chemistry according to NEET
Every year 4-5 questions are being asked from this CHAPTER.
DIFFICULTY LEVEL of MCQs asked from this chapter is "AVERAGE"
CONTENTS :
1. Equilibrium in physical process
2. Equilibrium in chemical process dynamic equilibrium
3. Law of chemical equilibrium and chemical constant***
4. Homogenous and heterogeneous equilibrium
5. Applications of equilibrium constant
6. Factors affecting equilibrium
Characteristics of Equilibrium State
1. It is achieved in a closed system only.
2. It is dynamic, can be attained from either side i.e. from the side of reactants or products.
LE CHATELIER'S PRINCIPLE
If a system, at equilibrium, is subjected to a change of concentration, pressure or temperature, the equilibrium shifts in the direction that tends to undo the effect of the change.
This leads to the following important results:
1. An increase in concentration of reactants always favours forward reaction so as to reduce the amount of reactants.
2. An increase in concentration of products always favours backward reaction so as to reduce the amount of products.
3. An increase in pressure always favours the reaction where the number of gaseous molecules is reduced.
4. Arise in temperature favours the endothermic reaction
This is the Most important topic in this unit.
Usually tricky Questions are asked from this topic.
Effect of addition of INERT GAS :
you have to practice a lot of MCQs based on this table and as well as from the law of equilibrium.
Tricky questions will be asked from the law of chemical equilibrium combined with lechatlier's principle
So, try to practice good quality MCQs from JEE MAINS and AIIMS previous year questions..
Before practicing that you should solve examples and intext questions in NCERT Book
Link for the PDF :
Link to the PDF of solutions for the MCQs at the end of above PDF :
Link for the YouTube video
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