Edexcel A-Level Chemistry Paper 1, June 2019
Every question from Edexcel A-Level Chemistry Paper 1, June 2019 (9CH0): 10 questions, 90 marks, each with its mark scheme and topic.
- Question 1 4 marks
Identify subatomic particles in 18O, select the correct mass spectrum for bromine molecules, determine the number of electrons in occupied p orbitals of a chloride ion, and identify the isoelectronic ion with the largest ionic radius.
Physical Chemistry · Organic Chemistry · Topic 1: Atomic Structure and the Periodic Table · Topic 7: Modern Analytical Techniques I
- Question 2 8 marks
Deduce equations, explain silver halide solubility results, compare oxidising strengths of halogens, and balance a disproportionation reaction of chlorine in terms of oxidation numbers.
Inorganic Chemistry · Topic 4: Inorganic Chemistry and the Periodic Table
- Question 3 7 marks
Calculate the enthalpy change of neutralisation for propanoic acid and explain the difference in enthalpy of neutralisation between ethanoic acid and hydrochloric acid using experimental data and calorimetry principles.
Physical Chemistry · Core Practicals · Topic 8: Energetics I · Topic 12: Acid-base Equilibria · Core Practical 8: Determine the enthalpy change of a reaction using Hess’s law
- Question 4 8 marks
Investigate the thermal decomposition of metal nitrates and carbonates, explaining the relative ease of decomposition based on ionic radius and polarization.
Inorganic Chemistry · Topic 4: Inorganic Chemistry and the Periodic Table
- Question 5 8 marks
Explain homogeneous and heterogeneous catalysis using transition metal examples including iron, cobalt, manganese, tungsten, and platinum.
Inorganic Chemistry · Physical Chemistry · Topic 9: Kinetics I · Topic 15: Transition Metals
- Question 6 15 marks
Discuss intermolecular forces, bond polarity, dot-and-cross diagrams, and perform calculations involving the ionic product of water at 310 K.
Physical Chemistry · Topic 2: Bonding and Structure · Topic 12: Acid-base Equilibria
- Question 7 6 marks
Compare and contrast the origin of the colour of a copper(II) complex with the origin of the colour of the copper(II) ion in a flame test, without stating specific colours.
Inorganic Chemistry · Physical Chemistry · Topic 15: Transition Metals · Topic 1: Atomic Structure and the Periodic Table
- Question 8 8 marks
Analyze and calculate values using a Born-Haber cycle for sodium hydride, determine reaction feasibility using Gibbs free energy, write a reduction half-equation, and identify correct lattice energy trends.
Physical Chemistry · Topic 13: Energetics II
- Question 9 15 marks
Calculate the mass of sodium ethanoate needed to form a buffer solution, explain the blood carbonic acid buffer system, draw a weak acid-strong base titration curve showing buffer action, and describe how to determine Ka from the curve.
Physical Chemistry · Topic 12: Acid-base Equilibria
- Question 10 11 marks
Calculate the equilibrium constant Kp, the number of sulfur dioxide molecules, explain the effect of adding oxygen or sodium hydroxide on equilibria, and identify the correct Kc expression for heterogeneous equilibria.
Physical Chemistry · Topic 5: Formulae, Equations and Amounts of Substance · Topic 10: Equilibrium I · Topic 11: Equilibrium II