Edexcel A-level Chemistry Year 13 revision

Topic 11: Equilibrium II

It builds on what you learned at AS in Equilibrium I, and takes it further.

There are 2 parts: we start with equilibrium constant Kc, and finish with equilibrium constant Kp.

1. 11.1Equilibrium constant Kc: expressions, units, calculations and the effect of temperature64 questions
2. 11.2Equilibrium constant Kp15 questions

Topic 12: Acid-base equilibria

It builds on what you learned at AS in Formulae, equations and amounts of substance, and takes it further.

There are 3 parts: we start with acids, bases and buffers, and finish with the practical on pH curves, determining Ka of a weak acid and making and testing buffers.

1. 12.1Acids, bases and buffers38 questions
2. 12.2Enthalpy change of neutralisation: strong and weak acids63 questions
3. 12.3Practical: pH curves, determining Ka of a weak acid and making and testing buffers46 questions

Topic 13: Energetics II

It builds on what you learned at AS in Energetics I, and takes it further.

We will go through it step by step.

1. 13.1ThermodynamicsFree 28 questions

Topic 14: Redox II

It builds on what you learned at AS in Redox I, and takes it further.

There are 3 parts: we start with electrode potentials and electrochemical cells, and finish with redox titrations.

1. 14.1Electrode potentials and electrochemical cells24 questions
2. 14.2Practical: measuring the EMF of electrochemical cells and testing electrode potential predictions32 questions
3. 14.3Redox titrations: manganate(VII), dichromate(VI) and iodine–thiosulfate calculations76 questions

Topic 15: Transition metals

It builds on what you learned at AS in Inorganic chemistry and the periodic table, and takes it further.

There are 5 parts: we start with transition metals, and finish with the practical on preparation of a transition metal complex.

1. 15.1Transition metals23 questions
2. 15.2Reactions of ions in aqueous solution58 questions
3. 15.3Colorimetry and visible spectroscopy: determining the concentration and formula of complex ions68 questions
4. 15.4Practical: test-tube reactions of transition metal ions (precipitation, ligand exchange, redox)30 questions
5. 15.5Practical: preparation of a transition metal complex38 questions

Topic 16: Kinetics II

It builds on what you learned at AS in Kinetics I, and takes it further.

There are 3 parts: we start with rate equations, and finish with the practical on measuring reaction rates by initial-rate and continuous-monitoring methods (including iodine–propanone and clock reactions).

1. 16.1Rate equations63 questions
2. 16.2Half-life of first-order reactions and concentration–time graphs73 questions
3. 16.3Practical: measuring reaction rates by initial-rate and continuous-monitoring methods (including iodine–propanone and clock reactions)Free 78 questions

Topic 17: Organic chemistry II

It builds on what you learned at AS in Organic chemistry I, and takes it further.

There are 4 parts: we start with optical isomerism, and finish with carboxylic acids and derivatives.

1. 17.1Optical isomerismFree 23 questions
2. 17.2Aldehydes and ketones21 questions
3. 17.3The iodoform (triiodomethane) test for CH3CO– and CH3CH(OH)– groups36 questions
4. 17.4Carboxylic acids and derivatives41 questions

Topic 18: Organic chemistry III

It builds on what you learned at AS in Organic chemistry I, and takes it further.

There are 11 parts: we start with aromatic chemistry, and finish with the practical on test-tube identification of organic functional groups (alkene, halogenoalkane, alcohol, carbonyl, carboxylic acid, phenol).

1. 18.1Aromatic chemistryFree 23 questions
2. 18.2Phenols: acidity, reactions with bromine, bases and acyl chlorides, and the iron(III) chloride testFree 51 questions
3. 18.3Directing effects of substituents in electrophilic substitution of benzene derivatives34 questions
4. 18.4Carbon–carbon bond formation: nitriles, Friedel–Crafts reactions and Grignard reagents20 questions
5. 18.5Amines16 questions
6. 18.6Diazonium salts and azo dyes: diazotisation and coupling36 questions
7. 18.7Polymers28 questions
8. 18.8Amino acids, proteins and DNA41 questions
9. 18.9Organic synthesisFree 23 questions
10. 18.10Practical: preparing a pure organic solid (e.g. aspirin), recrystallisation and melting-point purity test82 questions
11. 18.11Practical: test-tube identification of organic functional groups (alkene, halogenoalkane, alcohol, carbonyl, carboxylic acid, phenol)58 questions

Topic 19: Modern analytical techniques II

It builds on what you learned at AS in Modern analytical techniques I, and takes it further.

There are 4 parts: we start with nuclear magnetic resonance spectroscopy, and finish with combined structure determination using mass spectrometry, IR, 13C and 1H NMR data.

1. 19.1Nuclear magnetic resonance spectroscopy64 questions
2. 19.2Chromatography65 questions
3. 19.3Practical: separating mixtures by thin-layer chromatography and calculating Rf values79 questions
4. 19.4Combined structure determination using mass spectrometry, IR, 13C and 1H NMR data39 questions

Topic PS: Practical and maths skills

It builds on what you learned at AS in Practical and maths skills, and takes it further.

There are 4 parts: we start with maths skills, and finish with planning, analysing and evaluating practical investigations (variables, apparatus, reliability, validity).

1. PS.1Maths skills: logarithms and antilogs, rearranging equations, pH, pKa and Kw calculationsFree 53 questions
2. PS.2Maths skills: graphs, tangents, gradients and intercepts (rate graphs, Arrhenius ln k against 1/T)66 questions
3. PS.3Maths skills: significant figures, units, percentage error and uncertainty in measurements36 questions
4. PS.4Planning, analysing and evaluating practical investigations (variables, apparatus, reliability, validity)34 questions

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