CBSE Class 11 Chemistry Syllabus 2022-2023

The CBSE (Central Board of Secondary Education) is an educational board in India that provides curriculum and conducts examinations for secondary and senior secondary school students. The CBSE curriculum for Chemistry in 10th grade covers the fundamental concepts of chemistry and provides students with a basic understanding of the subject.

CBSE Class 11 Chemistry 2023-24 Course Structure

Units

Topic

Marks

1

Some Basic Concepts of Chemistry

7

2

Structure of Atom 

9

3

Classification of Elements and Periodicity in Properties

6

4

Chemical Bonding and Molecular Structure

7

5

Chemical Thermodynamics

9

6

Equilibrium

7

7

Redox Reactions

4

8

Organic Chemistry: Some Basic Principles and Techniques 

11

9

Hydrocarbons

10

10

Biomolecules

7

 

TOTAL

70

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Unit I: Some Basic Concepts of Chemistry      

General Introduction: Importance and scope of Chemistry. Nature of matter, laws of chemical combination, Dalton’s atomic theory: concept of elements, atoms andmolecules. Atomic and molecular masses, mole concept and molar mass, percentage composition, empirical and molecular formula, chemical reactions, stoichiometry andcalculations based onstoichiometry.

Unit II: Structure of Atom      

Discovery of Electron, Proton and Neutron, atomic number, isotopes and isobars. Thomson’s model and its limitations. Rutherford’s model and its limitations, Bohr’s model and its limitations, concept of shells and subshells, dual nature of matter and light, de Broglie’s relationship, Heisenberg uncertainty principle, concept of orbitals, quantum numbers, shapes of s, p and d orbitals, rules for filling electrons in orbitals – Aufbau principle, Pauli’s exclusion principle and Hund’s rule, electronic configuration of atoms, stability of half-filled and completely filled orbitals.

Unit III: Classification of Elements and Periodicity in Properties    

Significance of classification, brief history of the development of periodic table, modern periodic law and the present form of periodic table, periodic trends in properties of elements -atomic radii, ionic radii, inert gas radii, Ionization enthalpy, electron gain enthalpy, electronegativity, valency. Nomenclature of elements with atomic number greater than 100.

Unit IV: Chemical Bonding and Molecular Structure       

Valence electrons, ionic bond, covalent bond, bond parameters, Lewis’s structure, polar character of covalent bond, covalent character of ionic bond, valence bond theory, resonance, geometry of covalent molecules, VSEPR theory, concept of hybridization involving s, p and d orbitals and shapes of some simple molecules, molecular orbital theory of homonuclear diatomic molecules (qualitative idea only), Hydrogen bond.

Unit VI: Chemical Thermodynamics          

Concepts of System and types of systems, surroundings, work, heat, energy, extensive and intensive properties, state functions. First law of thermodynamics -internal energy and enthalpy, heat capacity and specific heat, measurement of ΔU and ΔH, Hess’s law of constant heat summation, enthalpy of bond dissociation, combustion, formation, atomization, sublimation, phase transition, ionization, solution and dilution. Second law of Thermodynamics (brief introduction) Introduction of entropy as a state function, Gibb’s energy change for spontaneous and non- spontaneous processes, criteria for equilibrium. Third law of thermodynamics (brief introduction).

Unit VII: Equilibrium 

Equilibrium in physical and chemical processes, dynamic nature of equilibrium, law of mass action, equilibrium constant, factors affecting equilibrium – Le Chatelier’s principle, ionic equilibrium- ionization of acids and bases, strong and weak electrolytes, degree of ionization, ionization of poly basic acids, acid strength, concept of pH, hydrolysis of salts (elementary idea), buffer solution, Henderson Equation, solubility product, common ion effect (with illustrative examples).

Unit VIII: Redox Reactions           

Concept of oxidation and reduction, redox reactions, oxidation number, balancing redox reactions, in terms of loss and gain of electrons and change in oxidation number, applications of redox reactions.

Unit XII: Organic Chemistry -Some Basic Principles and Techniques

General introduction, methods of purification, qualitative and quantitative analysis, classification and IUPAC nomenclature of organic compounds. Electronic displacements in a covalent bond: inductive effect, electrometric effect, resonance and hyper conjugation. Homolytic and heterolytic fission of a covalent bond: free radicals, carbocations, carbanions, electrophiles and nucleophiles, types of organic reactions.

Unit XIII: Hydrocarbons 

Classification of Hydrocarbons Aliphatic Hydrocarbons: Alkanes – Nomenclature, isomerism, conformation (ethane only), physical properties, chemical reactions including free radical mechanism of halogenation, combustion and pyrolysis. Alkenes – Nomenclature, the structure of double bond (ethene), geometrical isomerism, physical properties, methods of preparation, chemical reactions: addition of hydrogen, halogen, water, hydrogen halides (Markovnikov’s addition and peroxide effect), ozonolysis, oxidation, mechanism of electrophilic addition. Alkynes – Nomenclature, the structure of triple bond (ethyne), physical properties, methods of preparation, chemical reactions: acidic character of alkynes, addition reaction of – hydrogen, halogens, hydrogen halides and water. Aromatic Hydrocarbons: Introduction, IUPAC nomenclature, benzene: resonance, aromaticity, chemical properties: mechanism of electrophilic substitution. Nitration, sulphonation, halogenation, Friedel Craft’s alkylation and acylation, directive influence of the functional group in monosubstituted benzene. Carcinogenicity and toxicity.

Conclusion

CBSE Chemistry 10th grade curriculum is designed to provide students with a foundation in the subject, which can help them pursue further studies in Chemistry and related fields. the CBSE Chemistry curriculum also emphasizes practical knowledge and laboratory skills, which are necessary for understanding the application of chemistry in real-world situations.

FAQS

1.What is the syllabus for Chemistry in 11th grade science?

A:The syllabus for Chemistry in 11th grade science typically covers topics such as atomic structure, chemical bonding, chemical thermodynamics, chemical equilibrium, redox reactions, acid-base and precipitation reactions, and organic chemistry.  

2.What are some important concepts in Chemistry that are covered in 11th grade science?

A:Some important concepts covered in 11th grade Chemistry include chemical bonding, chemical kinetics, electrochemistry, acids and bases, organic chemistry, and thermodynamics.  

3.What are some common laboratory experiments in 11th grade Chemistry?

A:Common laboratory experiments in 11th grade Chemistry include determining the molar mass of a volatile liquid, the enthalpy change of a reaction, the identification of an unknown organic compound, and the preparation of a soap.  

 4.How important is Chemistry in 11th grade science?

 A: Chemistry is a crucial subject in 11th grade science as it helps students understand the composition, properties, and behavior of matter. It also provides a foundation for further studies in science and engineering

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