Edexcel A-Level Chemistry Paper 1, November 2021
Every question from Edexcel A-Level Chemistry Paper 1, November 2021 (9CH0): 10 questions, 90 marks, each with its mark scheme and topic.
- Question 1 4 marks
Identify isoelectronic ions, select the definition of relative isotopic mass, and calculate the relative atomic mass of bromine from isotopic abundance data.
Physical Chemistry · Topic 1: Atomic Structure and the Periodic Table
- Question 2 3 marks
Identify the correct apparatus and reagents for a flame test on barium carbonate, the flame colour of barium ions, and the effect of magnesium ions on the barium flame test.
Inorganic Chemistry · Topic 4: Inorganic Chemistry and the Periodic Table
- Question 3 5 marks
Describe the metallic bonding in platinum and the stages of heterogeneous catalysis in a catalytic converter.
Physical Chemistry · Inorganic Chemistry · Topic 2: Bonding and Structure · Topic 15: Transition Metals
- Question 4 15 marks
Assess and analyze successive ionisation energies, definitions, trends down Group 1, and graphical data for magnesium.
Physical Chemistry · Topic 1: Atomic Structure and the Periodic Table
- Question 5 13 marks
Calculate the enthalpy change for the reaction between chlorine and phosphorus, explain why bond enthalpies are positive, show disproportionation using oxidation numbers, balance a chlorine-alkali equation, identify chlorination/halogen conditions and colours, write an ionic equation for halide precipitation, and identify a halide ion by mass calculation.
Physical Chemistry · Inorganic Chemistry · Organic Chemistry · Topic 8: Energetics I · Topic 3: Redox I · Topic 4: Inorganic Chemistry and the Periodic Table · Topic 5: Formulae, Equations and Amounts of Substance
- Question 6 5 marks
Explain why entropy change is positive and why a wooden block freezes to a flask in an endothermic reaction, and calculate standard molar entropy change.
Physical Chemistry · Topic 13: Energetics II
- Question 7 15 marks
Calculate the pH of various acid and buffer solutions and explain related acid-base concepts.
Physical Chemistry · Topic 12: Acid-base Equilibria
- Question 8 12 marks
Explain ligand properties, colour, isomerism, and formulas of transition metal complex ions including cobalt and platinum complexes.
Inorganic Chemistry · Topic 15: Transition Metals
- Question 9 12 marks
Analyze lattice energies of barium and magnesium iodide, complete a Born-Haber cycle for copper(II) oxide, calculate its lattice energy, and determine the lattice energy of calcium bromide using an enthalpy cycle.
Physical Chemistry · Topic 13: Energetics II
- Question 10 6 marks
Discuss whether thermodynamic feasibility calculated using the Gibbs free energy equation determines if a reaction occurs in practice, referencing enthalpy, entropy terms, and kinetic factors.
Physical Chemistry · Topic 13: Energetics II