Chapter 26 · Class 11-12 & JEE/NEET
Some Basic Concepts of Chemistry
58 topics in 12 parts
Key ideas
Diagnostic Comparison & Property Matrix
| Parameter / Feature | Standard State / Condition A | Altered State / Condition B |
|---|---|---|
| Driving Force | Thermodynamic control (more stable product) | Kinetic control (lower activation barrier) |
| Solvent Dependency | Polar protic solvent stabilizes charge separation | Polar aprotic solvent accelerates bare nucleophilicity |
| Temperature Influence | High temperatures favor elimination / endothermic | Mild temperatures favor addition / exothermic |
| Common Pitfall | Overlooking rearrangement or stereochemical inversion | Neglecting boundary limits or stoichiometric coefficients |
All 58 topics in Some Basic Concepts of Chemistry
Basic Concepts
- Concept of Atom, Molecule, Element & Compound
- Dalton’s Atomic Theory
- Dimensional Analysis
- Matter & Its Nature
- Physical Quantities & Their Measurements
- Precision & Accuracy
- Representation of Physical Quantities
- Significant Figures
- SI Units
- Types of Chemical Reactions
- Separation Techniques
Laws of Chemical Combinations
- Avogadro’s Law
- Gay–Lussac’s Law of Gaseous Volumes
- Law of Conservation of Mass
- Law of Definite Proportions
- Law of Multiple Proportions
Mole Concept & Molar Masses
- Mole Concept
- Atomic & Molecular Masses
- Average Atomic Mass & Isotopic Abundance
- Number of Atoms, Ions & Molecules
- Molar Volume at NTP & STP
- Vapour Density & Molar Mass
- Ideal Gas Laws
Percentage Composition
- Elemental Composition
Formula & Composition
- Empirical & Molecular Formulae
- Combustion Analysis
- Hydrates & Water of Crystallisation
Stoichiometry
- Balancing of Chemical Equations
- Stoichiometric Calculations
- Limiting Reagent
- Theoretical & Actual Yields
- Percentage Purity
- Combustion Stoichiometry
- Reaction Sequences
Principle of Atom Conservation (POAC)
- POAC Calculations
Relation between Stoichiometric Quantities
- Mass–Mass, Mass–Volume & Volume–Volume Relations
Application of Mole Concept: Gravimetric Analysis
- Precipitation & Residue Calculations
- Combustion & Mass-Loss Calculations
Concentration Terms
- Molarity
- Molality
- Mole Fraction
- Mass & Volume Percentages
- Parts per Million
- Concentration Unit Conversion
- Dilution & Mixing
- Density–Concentration Relations
Equivalent Mass & Titrations
- Equivalent Mass & n-Factor
- Normality
- Acid–Base Neutralisation
- Acid–Base Titration
- Back Titration
- Iodometric Titration
- Redox Stoichiometry & Gram Equivalents
- Volume Strength
Gas Stoichiometry & Gaseous Mixtures
- Gaseous Volume Relations
- Gas Mixtures & Eudiometry
- Partial Pressures
- Combustion of Gases