Edexcel A-Level Chemistry Paper 1, June 2024
Every question from Edexcel A-Level Chemistry Paper 1, June 2024 (9CH0): 10 questions, 90 marks, each with its mark scheme and topic.
- Question 1 6 marks
Determine the fundamental particles in sulfur species and calculate the relative atomic mass of sulfur from isotopic abundances.
Physical Chemistry · Topic 1: Atomic Structure and the Periodic Table
- Question 2 7 marks
Explain the group trend in first electron affinities of halogens and identify elements from isoelectronic ions and successive ionisation energies data.
Physical Chemistry · Topic 1: Atomic Structure and the Periodic Table · Topic 13: Energetics II
- Question 3 10 marks
Describe qualitative tests to identify calcium bromide, calcium iodide, and potassium sulfate, and calculate the mass of potassium sulfate required to make a solution.
Inorganic Chemistry · Physical Chemistry · Core Practicals · Topic 4: Inorganic Chemistry and the Periodic Table · Topic 5: Formulae, Equations and Amounts of Substance · Core Practical 7: Identify unknown organic liquids and inorganic solids
- Question 4 14 marks
Explain acid-base concepts, identify a weak acid-strong base titration curve, compare acid pH values, and calculate blood buffer pH and equilibrium shifts.
Physical Chemistry · Topic 12: Acid-base Equilibria · Topic 10: Equilibrium I
- Question 5 10 marks
Calculate the enthalpy change of ethanol combustion using mean bond enthalpies and standard enthalpies of formation via a Hess cycle, explain the difference, and write the fuel cell electrode half-equations.
Physical Chemistry · Topic 8: Energetics I · Topic 14: Redox II · Topic 3: Redox I
- Question 6 6 marks
Explain why aqueous solutions of Cu2+ and Fe2+ ions are coloured with different colours, while aqueous Zn2+ ions are colourless, referring to electronic configurations.
Inorganic Chemistry · Physical Chemistry · Topic 15: Transition Metals · Topic 1: Atomic Structure and the Periodic Table
- Question 7 6 marks
Deduce the Kp expression and units, factors affecting Kp, the catalytic equations for vanadium(V) oxide in the Contact process, the colour and oxidation state of aqueous vanadium ions, and calculate the cell potential for the reduction of dioxovanadium(V) by zinc.
Physical Chemistry · Inorganic Chemistry · Topic 11: Equilibrium II · Topic 14: Redox II · Topic 15: Transition Metals
- Question 8 12 marks
Draw the dot-and-cross diagram of magnesium hydroxide, define enthalpy of solution, complete a Born–Haber cycle to calculate enthalpy of formation, and explain differences in experimental and theoretical lattice energies.
Physical Chemistry · Topic 2: Bonding and Structure · Topic 13: Energetics II
- Question 9 5 marks
Calculate ΔG at 298 K to show non-feasibility for the thermal decomposition of sodium hydrogencarbonate, and determine the minimum temperature in °C for feasibility.
Physical Chemistry · Topic 13: Energetics II
- Question 10 14 marks
Describe the preparation of a standard solution of vitamin C, complete a redox equation, and perform back-titration calculations with sodium thiosulfate to determine vitamin C content.
Physical Chemistry · Core Practicals · Topic 3: Redox I · Topic 5: Formulae, Equations and Amounts of Substance · Core Practical 2: Preparation of a standard solution from a solid acid