Edexcel A-Level Chemistry Paper 3, June 2024
Every question from Edexcel A-Level Chemistry Paper 3, June 2024 (9CH0): 10 questions, 120 marks, each with its mark scheme and topic.
- Question 1 3 marks
Define relative isotopic mass and deduce the number of peaks due to molecular ions of hydrogen gas formed from three isotopes.
Physical Chemistry · Topic 1: Atomic Structure and the Periodic Table
- Question 2 8 marks
Explain how London forces arise, determine which of four isomeric alkanes has the highest boiling temperature, and explain whether three given liquids with different polarities will be deflected by a charged rod.
Physical Chemistry · Topic 2: Bonding and Structure
- Question 3 13 marks
Calculate the relative formula mass of M2SO4 and identify M from a gravimetric precipitation experiment involving barium chloride, and explain flame test principles and experimental errors.
Inorganic Chemistry · Physical Chemistry · Core Practicals · Core Practical 7: Identify unknown organic liquids and inorganic solids · Topic 4: Inorganic Chemistry and the Periodic Table · Topic 5: Formulae, Equations and Amounts of Substance · Topic 1: Atomic Structure and the Periodic Table
- Question 4 13 marks
Calculate entropy changes, feasibility temperatures, explain thermal stability trends of nitrates, and complete a redox equation involving nitrate ions.
Physical Chemistry · Inorganic Chemistry · Topic 4: Inorganic Chemistry and the Periodic Table · Topic 13: Energetics II
- Question 5 6 marks
Compare and contrast the reactions of bromine with benzene and of bromine with cyclohexene, considering reaction types, products, special conditions, and justification.
Organic Chemistry · Topic 6: Organic Chemistry I · Topic 18: Organic Chemistry III
- Question 6 9 marks
Calculate the relative molecular mass of an ester using titration and stoichiometry data, and interpret its high-resolution proton NMR spectrum by explaining splitting patterns and predicting chemical shifts, relative peak areas, and splitting patterns.
Physical Chemistry · Organic Chemistry · Topic 5: Formulae, Equations and Amounts of Substance · Topic 17: Organic Chemistry II · Topic 19: Modern Analytical Techniques II
- Question 7 22 marks
Synthesise 1-ethylcyclohexan-1-ol from cyclohexene involving mechanisms, reaction schemes, reflux apparatus, and carbonyl derivatives.
Organic Chemistry · Core Practicals · Topic 6: Organic Chemistry I · Topic 17: Organic Chemistry II · Topic 18: Organic Chemistry III · Core Practical 7: Identify unknown organic liquids and inorganic solids · Core Practical 15: Analyse organic and inorganic unknowns
- Question 8 17 marks
Analyze a flawed titration method to find Ka of ethanoic acid, derive the half-neutralisation expression, calculate the mass of sodium ethanoate needed to form a buffer solution, and calculate the pH of a mixture of sodium hydroxide and sulfuric acid.
Physical Chemistry · Topic 12: Acid-base Equilibria
- Question 9 15 marks
Determine the concentration of tartaric acid and sulfur dioxide in wine using titration techniques, safety precautions, and redox/acid-base calculations.
Physical Chemistry · Core Practicals · Core Practical 3: Find the concentration of a solution of hydrochloric acid · Topic 5: Formulae, Equations and Amounts of Substance
- Question 10 14 marks
Analyze the acid-catalysed hydrolysis of ethyl ethanoate using experimental data, graphical methods, and a multi-step reaction mechanism.
Physical Chemistry · Organic Chemistry · Core Practicals · Core Practical 13a: Follow the rate of the iodine-propanone reaction by a titrimetric method · Topic 16: Kinetics II · Topic 6: Organic Chemistry I