Edexcel A-Level Chemistry Paper 1, June 2018
Every question from Edexcel A-Level Chemistry Paper 1, June 2018 (9CH0): 10 questions, 90 marks, each with its mark scheme and topic.
- Question 1 4 marks
Deduce the name of an unknown inorganic salt A from its analytical test results and describe additional tests to confirm the identity of its anion.
Inorganic Chemistry · Core Practicals · Topic 4: Inorganic Chemistry and the Periodic Table · Core Practical 7: Identify unknown organic liquids and inorganic solids · Core Practical 15: Analyse organic and inorganic unknowns · Topic 15: Transition Metals
- Question 2 8 marks
Deduce subatomic particle numbers for lithium isotopes, identify element X and formulas of species in a mass spectrum of X2, and state maximum electron capacities for specific atomic regions.
Physical Chemistry · Topic 1: Atomic Structure and the Periodic Table
- Question 3 5 marks
Calculate the enthalpy change of neutralisation for the reaction between nitric acid and sodium hydroxide using experimental temperature and volume data.
Physical Chemistry · Core Practicals · Topic 8: Energetics I · Topic 5: Formulae, Equations and Amounts of Substance · Core Practical 8: Determine the enthalpy change of a reaction using Hess’s law
- Question 4 9 marks
Answer multiple-choice, structure-drawing, and explanatory questions about transition metals covering electronic configurations, oxidation numbers, bonding types, colour, complex stereoisomerism, and autocatalytic reaction kinetics.
Inorganic Chemistry · Physical Chemistry · Topic 15: Transition Metals · Topic 9: Kinetics I
- Question 5 7 marks
Construct an electrochemical cell diagram, state salt bridge composition, write a redox equation, and calculate standard cell potential.
Physical Chemistry · Core Practicals · Topic 14: Redox II · Core Practical 10: Construct electrochemical cells and measure electrode potentials
- Question 6 10 marks
Answer questions on the solubility, equilibrium constant, enthalpy of solution, and Le Chatelier's principle for metal hydroxides including magnesium hydroxide.
Inorganic Chemistry · Physical Chemistry · Topic 4: Inorganic Chemistry and the Periodic Table · Topic 10: Equilibrium I · Topic 11: Equilibrium II · Topic 13: Energetics II
- Question 7 11 marks
Write an equation for the reaction of borax with hydrochloric acid, draw a dot-and-cross diagram and deduce bond angles and intermolecular forces for boric acid, calculate its pH and state assumptions, and identify a conjugate acid.
Physical Chemistry · Topic 2: Bonding and Structure · Topic 5: Formulae, Equations and Amounts of Substance · Topic 12: Acid-base Equilibria
- Question 8 12 marks
Identify the orbitals, write equations, and explain successive ionisation energies of calcium, calculate electron affinity from a Born–Haber cycle, and discuss differences between theoretical and experimental lattice energies.
Physical Chemistry · Topic 1: Atomic Structure and the Periodic Table · Topic 2: Bonding and Structure · Topic 13: Energetics II
- Question 9 15 marks
Calculate entropy changes, Gibbs free energy, and the equilibrium constant for chemical reactions, and explain reaction conditions using kinetic and thermodynamic considerations.
Physical Chemistry · Topic 13: Energetics II · Topic 10: Equilibrium I · Topic 9: Kinetics I
- Question 10 9 marks
Analyze an alloy of yellow gold containing copper, silver, and gold through a multi-step chemical procedure involving redox reactions, precipitation, and titration to determine its carat.
Physical Chemistry · Inorganic Chemistry · Core Practicals · Core Practical 3: Find the concentration of a solution of hydrochloric acid · Core Practical 11: Find the amount of iron in an iron tablet using redox titration · Topic 3: Redox I · Topic 5: Formulae, Equations and Amounts of Substance · Topic 4: Inorganic Chemistry and the Periodic Table · Topic 15: Transition Metals