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[ PDF ] DOWNLOAD NCERT CHEMISTRY BOOK CLASS XI PART 1

  

NCERT CHEMISTRY BOOKS

 CLASS XI 

PART 1


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TABLE OF CONTENTS


  • C H A P T E R-1

  • Unit 1 Some Basic Concepts of Chemistry 1
  • 1.1 Importance of Chemistry 4
  • 1.2 Nature of Matter 4
  • 1.3 Properties of Matter and their Measurement 6
  • 1.4 Uncertainty in Measurement 10
  • 1.5 Laws of Chemical Combinations 14
  • 1.6 Dalton’s Atomic Theory 16
  • 1.7 Atomic and Molecular Masses 16
  • 1.8 Mole Concept and Molar Masses 18
  • 1.9 Percentage Composition 18
  • 1.10 Stoichiometry and Stoichiometric Calculations 20
  • C H A P T E R-2
    Unit 2 Structure of Atom
  • 2.1 Discovery of Sub-atomic Particles 30
  • 2.2 Atomic Models 32
  • 2.3 Developments Leading to the Bohr’s Model of Atom 37
  • 2.4 Bohr’s Model for Hydrogen Atom 46
  • 2.5 Towards Quantum Mechanical Model of the Atom 49
  • 2.6 Quantum Mechanical Model of Atom

  • C H A P T E R-3

  • Unit 3 Classification of Elements and Periodicity in Properties 74
  • 3.1 Why do we Need to Classify Elements ? 74
  • 3.2 Genesis of Periodic Classification 75
  • 3.3 Modern Periodic Law and the present form of the Periodic Table 79
  • 3.4 Nomenclature of Elements with Atomic Numbers > 100 79
  • 3.5 Electronic Configurations of Elements and the Periodic Table 82
  • 3.6 Electronic Configurations and Types of Elements: 83
  • s-, p-, d-, f- Blocks
  • 3.7 Periodic Trends in Properties of Elements

  • C H A P T E R-4
    Unit 4 Chemical Bonding and Molecular Structure
  • 4.1 Kössel-Lewis Approach to Chemical Bonding 101
  • 4.2 Ionic or Electrovalent Bond 106
  • 4.3 Bond Parameters 107
  • 4.4 The Valence Shell Electron Pair Repulsion (VSEPR) Theory 112
  • 4.5 Valence Bond Theory 117
  • 4.6 Hybridisation 120
  • 4.7 Molecular Orbital Theory 125
  • 4.8 Bonding in Some Homonuclear Diatomic Molecules 129
  • 4.9 Hydrogen Bonding

  • C H A P T E R-5
    Unit 5 States of Matter
  • 5.1 Intermolecular Forces 137
  • 5.2 Thermal Energy 139
  • 5.3 Intermolecular Forces vs Thermal Interactions 139
  • 5.4 The Gaseous State 139
  • 5.5 The Gas Laws 140
  • 5.6 Ideal Gas Equation 145
  • 5.7 Kinetic Energy and Molecular Speeds 147
  • 5.8 Kinetic Molecular Theory of Gases 149
  • 5.9 Behaviour of Real Gases: Deviation from Ideal Gas Behaviour 150
  • 5.10 Liquefaction of Gases 152
  • 5.11 Liquid State
  • C H A P T E R-6
    Unit 6 Thermodynamics
  • 6.1 Thermodynamic Terms 161
  • 6.2 Applications 164
  • 6.3 Measurement of DU and DH: Calorimetry 169
  • 6.4 Enthalpy Change, D
  • rH of a Reaction – Reaction Enthalpy 171
  • 6.5 Enthalpies for Different Types of Reactions 176
  • 6.6 Spontaneity 181
  • 6.7 Gibbs Energy Change and Equilibrium 186
  • C H A P T E R-7
    Unit 7 Equilibrium
  • 7.1 Equilibrium in Physical Processes 193
  • 7.2 Equilibrium in Chemical Processes – Dynamic Equilibrium 196
  • 7.3 Law of Chemical Equilibrium and Equilibrium Constant 198
  • 7.4 Homogeneous Equilibria 201
  • 7.5 Heterogeneous Equilibria 203
  • 7.6 Applications of Equilibrium Constants 205
  • 7.7 Relationship between Equilibrium Constant K, 208
  • Reaction Quotient Q and Gibbs Energy G
  • 7.8 Factors Affecting Equilibria 208
  • 7.9 Ionic Equilibrium in Solution 212
  • 7.10 Acids, Bases and Salts 213
  • 7.11 Ionization of Acids and Bases 216
  • 7.12 Buffer Solutions 226
  • 7.13 Solubility Equilibria of Sparingly Soluble Salts 228

Appendices 239
Answer to some Selected Questions 253
Index 259










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