CBSE Class 11 Chemistry Syllabus 2023-24, Download PDF

CBSE Class 11 Chemistry Syllabus 2023-24

The Central Board of Secondary Education has released an updated PDF of CBSE Class 11 Chemistry Syllabus 2023-24. Students of class 11th must check the detailed Class 11 Chemistry Syllabus 2023-24 and prepare for the annual exams accordingly. The CBSE 11th Chemistry Syllabus 2023-24 provides the students with an idea of the course structure that includes all the chapters and topics to be covered for the session. Referring to the syllabus and then starting with the preparations will help you to save your time and divide your time strategically to those chapters that carry more marks. Scroll through this page to know all about Class 11 Chemistry Syllabus for the academic year 2023-24.

Chemistry Class 11 Syllabus 2023-24

The Chemistry Class 11 Syllabus 2023-24 has been divided into two parts- theory and practical wherein the theory part carries 70 marks while the practical carries 30 marks. We have provided the marks distribution of chapters along with the Chemistry Class 11 Syllabus 2023-24 which serves as a blue print of the questions to be asked in the annual exams. Take a look at the table below to understand the marks distribution of CBSE Class 11 Chemistry Syllabus 2023-24 to prioritise the important chapters.

CBSE 11th Chemistry Syllabus 2023-24 (Chapter-wise)

The CBSE 11th Chemistry Syllabus 2023-24 has been designed in such a way that the students can know the basics and they will not have much inconvenience in class 12th. The chapter wise CBSE 11th Chemistry Syllabus 2023-24 has been shared below along with the official PDF. Students must check all the chapters listed in the CBSE Class 11 Chemistry Syllabus 2023-24 and try to cover them all before the exams.

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: the concept of elements, atoms, and molecules.
• Atomic and molecular masses, mole concept and molar mass, percentage composition, empirical and molecular formula, chemical reactions, stoichiometry, and calculations based on stoichiometry.

Unit II: Structure of Atom

• Discovery of Electron, Proton, 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, a brief history of the development of the periodic table, modern periodic law, and the present form of the 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,
• The polar character of the covalent bond,
• The covalent character of ionic bond,
• Valence bond theory,
• Resonance,
• The 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 Systems and types of systems, surroundings, work, heat, energy, extensive and intensive properties, and state functions.
• The 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 7: Equilibrium

• Equilibrium in physical and chemical processes, dynamic nature of equilibrium, law of mass action, the 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 polybasic acids, acid strength, the 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, electromeric effect, resonance, and hyperconjugation.
• 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.

CBSE Class 11 Chemistry Syllabus 2023-24 for Practical

The practical carries 30 marks in total including activity and viva. The CBSE Class 11 Chemistry Syllabus 2023-24 for practical has been shared below which consists of Volumetric Analysis of 8 marks, Salt Analysis of 8 marks, Content-Based Experiment of 6 marks, Project Work of 4 marks and Class record and viva of 4 marks.

Experiments

A. Basic Laboratory Techniques

• Cutting glass tube and glass rod
• Bending a glass tube
• Drawing out a glass jet
• Boring a cork

B. Characterization and Purification of Chemical Substances

• Determination of the melting point of an organic compound.
• Determination of boiling point of an organic compound.
• Crystallization of impure sample of any one of the following: Alum, Copper Sulphate, Benzoic Acid.

C. Experiments based on pH

1. Any one of the following experiments:

• Determination of pH of some solutions obtained from fruit juices, solutions of known and varied concentrations of acids, bases, and salts using pH paper or universal indicator.
• Comparing the pH of solutions of strong and weak acids of the same concentration. Study the pH change in the titration of a strong base using a universal indicator.

2. Study the pH change by common-ion in case of weak acids and weak bases.

D. Chemical Equilibrium One of the following experiments:

• Study the shift in equilibrium between ferric ions and thiocyanate ions by increasing/decreasing the concentration of either of the ions.
• Study the shift in equilibrium between [Co(H2O)6] 2+ and chloride ions by changing the concentration of either of the ions.

E. Quantitative Estimation

• Using a mechanical balance/electronic balance.
• Preparation of standard solution of Oxalic acid.
• Determination of strength of a given solution of Sodium hydroxide by titrating it against a standard solution of Oxalic acid. Preparation of standard solution of Sodium carbonate.
• Determination of strength of a given solution of hydrochloric acid by titrating it against standard Sodium Carbonate solution.

F. Qualitative Analysis

• Determination of one anion and one cation in a given salt Cation: Pb2+, Cu2+ As3+, Aℓ3+, Fe3+, Mn2+, Zn2+, Ni2+, Ca2+, Sr2+, Ba2+, Mg2+, NH4 + Anions: (CO3) 2- , S2- , (SO3) 2- , (NO2) – , (SO4) 2- , Cℓ- , Br- , I- , (PO4) 3- , (C2O4) 2- , CH3COO-, NO3 – (Note: Insoluble salts excluded)
• Detection of -Nitrogen, Sulphur, and Chlorine in organic compounds.

G. PROJECTS

• Scientific investigations involve laboratory testing and collecting information from other sources.

A few suggested Projects:

• Checking the bacterial contamination in drinking water by testing sulfide ion
• Study of the methods of purification of water
• Testing the hardness, presence of Iron, Fluoride, Chloride, etc., depending upon the regional variation in drinking water, and study of causes of the presence of these ions above the permissible limit (if any).
• Investigation of the foaming capacity of different washing soaps and the effect of the addition of Sodium carbonate on it
• Study the acidity of different samples of tea leaves.
• Determination of the rate of evaporation of different liquids.
• Study the effect of acids and bases on the tensile strength of fibers.
• Study of acidity of fruit and vegetable juices.