CBSE · Class 12 · Chemistry · Chapter 1

Solutions

Types of solutions and concentration terms.

11 lessons 169 min
Start chapter

Lessons in this chapter

  1. 1Solutions and Ways to Express CompositionIdentify homogeneous mixtures and express their composition using percentages, parts per million and mole fractions.
  2. 2Molarity, Molality and Concentration CalculationsConvert between solution composition measures using conservation of mass, moles and carefully defined volumes.
  3. 3Solubility and Henry’s LawExplain dissolution through competing interactions and dynamic equilibrium, then quantify gas solubility using partial pressure.
  4. 4Vapour Pressure of Volatile Liquid MixturesUse liquid composition to calculate equilibrium partial pressures, total pressure and vapour composition.
  5. 5Ideal Solutions, Deviations and AzeotropesExplain real mixture behaviour using molecular interactions and interpret the limits of separation by distillation.
  6. 6Vapour-Pressure Lowering and Molar MassDerive relative vapour-pressure lowering and use it to determine solute amounts without confusing exact and dilute forms.
  7. 7Elevation of Boiling PointConnect solvent vapour-pressure lowering to boiling-point elevation and derive equations for concentration and molar mass.
  8. 8Depression of Freezing PointExplain solvent freezing equilibrium and use freezing-point depression to determine concentrations and molar masses.
  9. 9Osmosis, Osmotic Pressure and Reverse OsmosisExplain selective solvent movement and calculate osmotic pressure, solute molar mass and the pressure needed to reverse osmosis.
  10. 10Association, Dissociation and Abnormal Molar MassCount particles after chemical equilibria and use the van ’t Hoff factor to interpret colligative measurements.
  11. 11Chapter Summary and PracticeConnect solution composition, molecular interactions, phase behaviour and particle counting through an integrated review and fully answered problems.