According to the CBSE Syllabus 2023-24, this chapter has been renumbered as Chapter 6.
Equilibrium is attained when molecules leaving the liquid to vapour equals the molecules returning to the liquid from vapour. Kc is the equilibrium constant. It is defined as the concentration of products divided by the concentration of reactants where each term is raised to the stoichiometric coefficient.
Kc = [C]c[D]d/[A]a[B]b
For more information on Equilibrium, watch the below videos
Le Chatelier’s Principle
It states that change in any factor, such as concentration, pressure, temperature, etc., causes the equilibrium to shift in such a direction to counteract or reduce the effect of a change.
Read More: Le Chatelier’s Principle
Electrolytes
Electrolytes are substances which conduct electricity in aqueous solution. Some examples of electrolytes are bases, salts, and acids. The electricity conducted in an aqueous solution is due to cations and anions produced by the ionization or dissociation of electrolytes in the solution.
Lewis Acid and Base
A Lewis acid is a species containing an empty orbital which can accept an electron pair (an electrophile) from a Lewis base and forms a Lewis adduct.
A Lewis base is a species having a filled orbital which contains an electron pair that will not be involved in bonding but might form a dative bond with Lewis acid.
Also, Read: Lewis Acids and Bases
| Also Access |
| NCERT Solutions for Class 11 Chemistry Chapter 7 |
| NCERT Exemplar for Class 11 Chemistry Chapter 7 |
Important Questions
1. While writing the equilibrium constant expression, you can ignore pure liquids and solids. Why? Explain.
2. Tick mark Lewis acids from the following
H2O, H+, NH+4 and BF3
3. Below are Brönsted bases. Write the conjugate acids for the same.
NH2–, HCOO–, NH3. Cupric chlorate and sodium iodate have an equal volume of 0.002M. Will the precipitation of copper iodate will occur or not?
4. Cupric chlorate and sodium iodate have an equal volume of 0.002M. Will the precipitation of copper iodate will occur or not?
5. Calculate the solubilities of
a) barium chromate
b) ferric hydroxide
c) lead chloride
d) mercurous iodide
e) silver chromate
At 300K from their solubility product constant. Also, calculate the molarities of the individual ions.
For more questions on Equilibrium, watch the below video
To discover more about this chapter, read up Equilibrium Class 11 Notes PDF from BYJU’S.
Other Important Links:
Frequently Asked Questions on CBSE Class 11 Chemistry Notes Chapter 7 Equilibrium
What is stated in ‘Le Chatelier’s’ principle?
It states that changes in the temperature, pressure, volume, or concentration of a system will result in predictable and opposing changes in the system in order to achieve a new equilibrium state.
What is the meaning of Lewis acid and Lewis base?
A Lewis acid is a substance that accepts a pair of electrons to form a covalent bond. A Lewis base is a substance that donates a pair of electrons to form a covalent bond.
What are electrolytes?
Electrolytes are minerals in your blood and other body fluids that carry an electric charge.
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