Edexcel A-Level Chemistry Paper 3, November 2021
Every question from Edexcel A-Level Chemistry Paper 3, November 2021 (9CH0): 9 questions, 120 marks, each with its mark scheme and topic.
- Question 1 9 marks
Assess chlorine properties including subatomic particles of isotopes, mass spectrometry of molecular chlorine, nomenclature of chlorate(V), electron affinity equations, and standard electrode potentials.
Inorganic Chemistry · Physical Chemistry · Topic 4: Inorganic Chemistry and the Periodic Table · Topic 1: Atomic Structure and the Periodic Table · Topic 14: Redox II
- Question 2 7 marks
Deduce chemical tests to distinguish between isomers of C4H8O2 containing different functional groups and identify expected infrared absorbance ranges for each isomer.
Organic Chemistry · Core Practicals · Core Practical 7: Identify unknown organic liquids and inorganic solids · Topic 6: Organic Chemistry I · Topic 7: Modern Analytical Techniques I
- Question 3 10 marks
Complete the electronic configuration of an aluminium atom, draw a dot-and-cross diagram, predict the shape and bond angle of AlCl3, draw the mechanism for the alkylation of benzene using AlCl3 as a catalyst, and illustrate the dimerisation of AlCl3 including the type of bonding involved.
Physical Chemistry · Organic Chemistry · Topic 1: Atomic Structure and the Periodic Table · Topic 2: Bonding and Structure · Topic 18: Organic Chemistry III
- Question 4 10 marks
Investigate the rate of reaction between calcium carbonate and hydrochloric acid using mass loss and gas collection methods.
Physical Chemistry · Core Practicals · Core Practical 1: Measuring the molar volume of a gas · Topic 9: Kinetics I
- Question 5 11 marks
Identify the ions present in two salts X and Y using qualitative analysis test observations and write ionic equations and formulas for complexes.
Inorganic Chemistry · Core Practicals · Core Practical 7: Identify unknown organic liquids and inorganic solids · Topic 4: Inorganic Chemistry and the Periodic Table · Topic 15: Transition Metals
- Question 6 21 marks
Analyze the multi-step preparation and purity analysis of paracetamol including phenol nitration, intermolecular forces, filtration under reduced pressure, recrystallisation, and a redox titration calculation.
Organic Chemistry · Physical Chemistry · Core Practicals · Topic 18: Organic Chemistry III · Topic 17: Organic Chemistry II · Topic 6: Organic Chemistry I · Topic 5: Formulae, Equations and Amounts of Substance · Topic 2: Bonding and Structure · Core Practical 15: Analyse organic and inorganic unknowns · Core Practical 7: Identify unknown organic liquids and inorganic solids
- Question 7 19 marks
Determine the enthalpy change for the thermal decomposition of sodium hydrogencarbonate using experimental calorimetry data and Hess's law.
Physical Chemistry · Core Practicals · Core Practical 8: Determine the enthalpy change of a reaction using Hess’s law · Topic 8: Energetics I
- Question 8 18 marks
Describe chemical tests, mechanisms, stereochemistry, NMR spectra, and redox reactions for carbonyl compounds including pentan-2-one and pentan-3-one.
Organic Chemistry · Topic 6: Organic Chemistry I · Topic 17: Organic Chemistry II · Topic 19: Modern Analytical Techniques II
- Question 9 15 marks
Calculate the effects of pressure and temperature on equilibrium constants and yields in the Haber process for ammonia synthesis.
Physical Chemistry · Topic 10: Equilibrium I · Topic 11: Equilibrium II