Edexcel A-Level Chemistry Paper 2, June 2018
Every question from Edexcel A-Level Chemistry Paper 2, June 2018 (9CH0): 9 questions, 90 marks, each with its mark scheme and topic.
- Question 1 4 marks
Identify properties and reactions of alkanes, including free-radical substitution, incomplete combustion, reforming, and molecular formula determination from skeletal structures.
Organic Chemistry · Topic 6: Organic Chemistry I
- Question 2 3 marks
Identify the process by which gaseous reactants attach to a catalytic surface and explain why a honeycomb structure is used in a car exhaust catalytic converter.
Physical Chemistry · Topic 9: Kinetics I
- Question 3 11 marks
Analyze thin layer chromatography and gas chromatography of amino acids and organic mixtures, calculating Rf values and sketching chromatograms.
Organic Chemistry · Core Practicals · Core Practical 15: Analyse organic and inorganic unknowns · Topic 19: Modern Analytical Techniques II · Topic 18: Organic Chemistry III
- Question 4 12 marks
Calculate the minimum mass of sodium azide needed to inflate an airbag, balance a redox equation with oxidation numbers, explain the reaction of metal oxides with silicon dioxide, and determine the effect of cooling on a Maxwell-Boltzmann distribution.
Physical Chemistry · Inorganic Chemistry · Topic 5: Formulae, Equations and Amounts of Substance · Topic 3: Redox I · Topic 9: Kinetics I · Topic 4: Inorganic Chemistry and the Periodic Table
- Question 5 7 marks
Describe and explain aspects of the oxidation of alcohols including half-equations, reflux apparatus setup, anti-bumping granules, and the use of reflux versus distillation.
Organic Chemistry · Core Practicals · Physical Chemistry · Core Practical 5: Investigate the oxidation of ethanol · Topic 6: Organic Chemistry I · Topic 3: Redox I
- Question 6 16 marks
Devise an experiment to compare hydrolysis rates of halogenoalkanes, explain trends, define chirality for butan-2-ol enantiomers, and compare SN1 and SN2 mechanisms.
Organic Chemistry · Core Practicals · Core Practical 4: Investigate the hydrolysis of halogenoalkanes · Topic 6: Organic Chemistry I · Topic 17: Organic Chemistry II
- Question 7 11 marks
Devise a synthetic pathway to convert benzene into phenylethene, identify reagent for diol formation, draw polystyrene repeat units, discuss incineration disposal, and calculate carbon percentage by mass.
Organic Chemistry · Physical Chemistry · Topic 6: Organic Chemistry I · Topic 17: Organic Chemistry II · Topic 18: Organic Chemistry III · Topic 5: Formulae, Equations and Amounts of Substance
- Question 8 10 marks
Assess the reactions of phenol including bromination, nitration mechanisms, percentage yield calculation, and structural isomerism of 4-nitrophenol.
Organic Chemistry · Physical Chemistry · Topic 18: Organic Chemistry III · Topic 5: Formulae, Equations and Amounts of Substance
- Question 9 16 marks
Investigate the reaction kinetics of iodine clock reactions including rate equations, rate constants, activation energy from Arrhenius plots, and experimental design.
Physical Chemistry · Core Practicals · Core Practical 13b: Use a clock reaction to determine a rate equation · Topic 9: Kinetics I · Topic 16: Kinetics II