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OCR A-level Chemistry

OCR Chemistry A (H432)8 topics104 lessons

Free OCR A-level Chemistry revision for OCR Chemistry A (H432): 8 topics and 104 short lessons, each with R.E.C.I.P.E. recall steps and a quiz. The topics follow the OCR specification.

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1. Rate of Reaction

11 lessons

  1. The Rate of a Reaction
  2. Measuring Reaction Rates
  3. Experimental Determination of the Rate of Reaction
  4. The Rate Equation
  5. The Order of a Reaction
  6. The Rate Constant k
  7. Worked Example
  8. Half-Lives and Reaction Rate Graphs
  9. The Rate Determining Step
  10. Catalysts
  11. The Effect of Temperature and Catalysts on the Rate Constant.

2. Equilibria

6 lessons

  1. Dynamic Equilibria
  2. Homogenous and Heterogenous Equilibria and Kc
  3. Finding the Value of Kc
  4. The Effect of Temperature on Kc
  5. Catalysts and Kc
  6. Partial Pressures and Kp

3. Acids, Bases and Buffers

15 lessons

  1. Acids and Bases
  2. Conjugate Acid-Base Pairs
  3. Strong and Weak Acids and Bases
  4. The Acid Dissociation Constant Ka
  5. pH
  6. Calculating the pH of a Strong Acid
  7. Calculating the pH of a Weak Acid
  8. The Ionic Product of Water Kw
  9. Calculating the pH of a Strong Base
  10. Buffer Solutions
  11. pH of a Buffer Solution
  12. Controlling the pH of Blood
  13. Titration Curves
  14. Acid-Base Indicators
  15. Standard Enthalpy of Neutralisation

4. Lattice Enthalpy

10 lessons

  1. The Standard Enthalpy Change of Formation
  2. The Standard Enthalpy Change of Atomisation
  3. First Ionisation Energy
  4. First Electron Affinity
  5. Lattice Enthalpy
  6. Born-Haber Cycles
  7. Born-Haber Cycle for Sodium Oxide
  8. Born-Haber Cycle for Calcium Chloride
  9. Enthalpy Change of Hydration
  10. Enthalpy Change of Solution

5. Entropy

6 lessons

  1. Entropy
  2. The Second Law of Thermodynamics
  3. The Entropy Change of a System
  4. The Effect of Temperature on Entropy
  5. The Entropy Change of the Surroundings
  6. Spontaneous Reactions and Gibbs Free Energy

6. Electrochemistry

14 lessons

  1. Oxidation and Reduction
  2. Ionic Equations
  3. Electrochemical Half Cells
  4. Electrochemical Cells
  5. The Standard Hydrogen Half Cell
  6. Standard Electrode Potential Eθ and the Electrochemical Series
  7. Calomel Electrode
  8. Standard Cell Potentials Eθcell Values and Electrochemical Cells
  9. Non-Standard Conditions
  10. Cell Diagrams
  11. Thermodynamic Feasibility of a Reaction and the Extent of a Reaction
  12. Electrochemical Cells
  13. Rechargeable Batteries
  14. Alkaline Fuel Cells

7. Transition Metals

21 lessons

  1. Transition Metals
  2. Properties of Transition Metals
  3. Complex Ions
  4. Shapes of complex ions
  5. Isomerism
  6. Formation of Coloured Ions
  7. Spectroscopy
  8. Ligand Substitution Reactions
  9. Vanadium
  10. Tollens Reagent
  11. Redox Potential
  12. Redox Titrations
  13. Heterogenous Catalysts
  14. Homogenous Catalysts
  15. Autocatalysis
  16. Hydration of Metal Ions
  17. Reaction with Ammonia Solution
  18. Reaction with Sodium Hydroxide
  19. Reaction with Sodium Carbonate
  20. Test for Transition Metal Ions
  21. Questions

8. Redox Reactions

21 lessons

  1. Transition Metals
  2. Properties of Transition Metals
  3. Complex Ions
  4. Shapes of complex ions
  5. Isomerism
  6. Formation of Coloured Ions
  7. Spectroscopy
  8. Ligand Substitution Reactions
  9. Vanadium
  10. Tollens Reagent
  11. Redox Potential
  12. Redox Titrations
  13. Heterogenous Catalysts
  14. Homogenous Catalysts
  15. Autocatalysis
  16. Hydration of Metal Ions
  17. Reaction with Ammonia Solution
  18. Reaction with Sodium Hydroxide
  19. Reaction with Sodium Carbonate
  20. Test for Transition Metal Ions
  21. Questions