Electrolysis: past paper questions

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• Question 4May/June 2026, paper 41Structured10 marksHas a diagram

  Some electrode potentials are given in Table 4.1.

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• Question 2May/June 2024, paper 42Structured9 marksHas a diagram

  Lithium nitrate, ${\text{LiNO}}_3$, decomposes on heating in a similar way to Group 2 nitrates to give the metal oxide, a brown gas and oxygen.

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• Question 3Oct/Nov 2023, paper 42Structured18 marksHas a diagram

  Some electrode potentials are shown in Table 3.1.

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• Question 6May/June 2024, paper 42Structured13 marks

  Aqueous solutions of methanoic acid, $\text{HCOOH}$, and propanoic acid, ${\text{CH}}_3{\text{CH}}_2\text{COOH}$, are mixed together. An equilibrium is set up between two conjugate acid–base pairs. Define conjugate acid–base pair.

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• Question 2May/June 2024, paper 43Structured12 marksHas a diagram

  Define transition element.

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• Question 5May/June 2025, paper 41Structured15 marks

  Copper is a transition element. Complete the electronic configurations of a $\mathrm{C}{\mathrm{u}}^{+}$ ion and a $\mathrm{C}{\mathrm{u}}^{2+}$ ion.

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• Question 4May/June 2024, paper 43Structured13 marksHas a diagram

  Define standard electrode potential, $E^{\circ }$, including a description of standard conditions.

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• Question 5May/June 2025, paper 43Structured15 marks

  Copper is a transition element. Complete the electronic configurations of a ${\mathrm{C}\mathrm{u}}^{+}$ ion and a ${\mathrm{C}\mathrm{u}}^{2+}$ ion.

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