CBSE Class XI
CHEMISTRY SYLLABUS
Term II (Theory)
2021-2022
Hello Students, this Article will give you the CBSE class 12 chemistry term-2 syllabus for the year 2021. Refer here for the recent Syllabus. You can also download the PDF at the end of this article.
| S.No | UNIT | Periods | Marks |
| 1 | States of Matter: Gases and Liquids | 9 | 15 |
| 2 | Chemical Thermodynamics | 14 | |
| 3 | Equilibrium | 12 | |
| 4 | s -Block Elements | 5 | 11 |
| 5 | Some p -Block Elements | 9 | |
| 6 | Hydrocarbons | 10 | 9 |
| TOTAL(MARKS) | 59 | 35 |
CHAPTER-WISE
States of Matter: Gases and Liquids
Three states of matter, intermolecular interactions, types of bonding, melting and boiling points, the role of gas laws in elucidating the concept of the molecule, Boyle’s law, Charles law, Gay Lussac’s law, Avogadro’s law, ideal behaviour, empirical derivation of gas equation, Avogadro’s number, ideal gas equation and deviation from ideal behaviour.
Chemical Thermodynamics
- Concepts of System and types of systems, surroundings, work, heat, energy, extensive and intensive properties, state functions.
- The first law of thermodynamics -internal energy and enthalpy, measurement of U and H, Hess’s law of constant heat summation, enthalpy of bond dissociation, combustion, formation, atomization, sublimation, phase transition, ionization, solution and dilution.
- The second law of Thermodynamics (brief introduction).
- Introduction of entropy as a state function, Gibb’s energy change for spontaneous and non-spontaneous processes.
- Third law of thermodynamics (brief introduction).
Equilibrium
Equilibrium in physical and chemical processes, dynamic nature of equilibrium, the 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 polybasic acids, acid strength, the concept of pH, buffer solution, solubility product, common ion effect (with illustrative examples).
s -Block Elements
Group 1 and Group 2 Elements -General introduction, electronic configuration, occurrence, anomalous properties of the first element of each group, diagonal relationship, trends in the variation of properties (such as ionization enthalpy, atomic and ionic radii), trends in chemical reactivity with oxygen, water, hydrogen and halogens, uses.
Some p -Block Elements
- General Introduction to p -Block Elements.
- Group 13 Elements: General introduction, electronic configuration, occurrence, variation of properties, oxidation states, trends in chemical reactivity, anomalous properties of the first element of the group, Boron – physical and chemical properties.
- Group 14 Elements: General introduction, electronic configuration, occurrence, variation of properties, oxidation states, trends in chemical reactivity, anomalous behaviour of first elements. Carbon-catenation, allotropic forms, physical and chemical properties.
Hydrocarbons
- Classification of Hydrocarbons Aliphatic Hydrocarbons.
- Alkanes – Nomenclature, isomerism, conformation (ethane only), physical properties, chemical reactions.
- 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.
States of Matter: Gases and Liquids
Three states of matter, intermolecular interactions, types of bonding, melting and boiling points, the role of gas laws in elucidating the concept of the molecule, Boyle’s law, Charles law, Gay Lussac’s law, Avogadro’s law, ideal behaviour, empirical derivation of gas equation, Avogadro’s number, ideal gas equation and deviation from ideal behaviour.
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