Born-Haber cycles and lattice enthalpy

Chemia IBPaper 2, maj 2026, TZ1wzorowane3 pktobliczeniowetrudne (szac.)

Zadanie 2d

Rubidium also forms compounds with halogens such as chlorine, Cl. Annotate the Born–Haber cycle for rubidium chloride, RbCl, with the correct values in the boxes A, B and C. Use sections 9 and 12 of the data booklet.

• Materiał graficzny

Chemia IBPaper 1A, maj 2026, TZ2wzorowane1 pktzamknięteśrednie (szac.)

Zadanie 22

Which ionic compound is expected to have the largest lattice enthalpy? A. MgO B. NaF C. KBr D. CaS

Chemia IBPaper 1A, maj 2026, TZ2wzorowane1 pktzamknięteśrednie (szac.)

Zadanie 23

The Born–Haber cycle for the formation of potassium fluoride, KF, is shown. What is the enthalpy of formation of potassium fluoride, KF, in kJ mol-1? A. −490 B. +86.5 C. +1088.5 D. −569.5

• Tabela do uzupełnienia
• Materiał graficzny

Chemia IBPaper 2, maj 2025, TZ1wzorowane4 pktotwartetrudne (szac.)

Zadanie 4c

Magnesium carbonate and magnesium chloride are ionic compounds. (i) The Born-Haber cycle for magnesium chloride, MgCl₂, is shown with three boxes left empty. Annotate the cycle by writing the name of the process, or the formulas of the species present…

• Materiał graficzny

Chemia IBPaper 1A, maj 2025, TZ3wzorowane1 pktzamknięteśrednie (szac.)

Zadanie 22

The diagram shows an energy cycle for the formation of solid potassium bromide from its elements. Which energy change in the cycle represents the first ionization energy of potassium? A. ΔH₂ B. ΔH₄ C. ΔH₅ D. ΔH₆

• Materiał graficzny

Chemia IBPaper 2, listopad 2025, TZ3wzorowane9 pktobliczeniowetrudne (szac.)

Zadanie 5c

(i) Using sections 9 and 17 of the data booklet, and showing your working, deduce the type of bonding present in magnesium chloride, MgCl₂, and its percentage covalent character. (ii) Assuming purely ionic bonding, and using sections 9 and 12 of the…

• Materiał graficzny

Chemia IBPaper 1A, listopad 2025, TZ1wzorowane1 pktzamkniętełatwe (szac.)

Zadanie 22

Which equation represents the enthalpy change of atomization, ΔH_at, of iodine? A. I₂(s) → I₂(g) B. I₂(g) → 2 I(g) C. $\ce{1/2I2(g) -> I(g)}$ D. $\ce{1/2I2(s) -> I(g)}$

Chemia IBPaper 1A, specimen 2025wzorowane1 pktzamknięteśrednie (szac.)

Zadanie 23

Which processes in the Born–Haber cycle for magnesium oxide are endothermic? I. Enthalpy of formation of magnesium oxide, $\ce{Mg(s) + 1/2 O2(g) -> MgO(s)}$ II. Second electron affinity of oxygen, O⁻(g) + e⁻ → O²⁻(g) III. Lattice enthalpy of…

Chemia IBPaper 2, maj 2024, TZ2wzorowane3 pktobliczeniowetrudne (szac.)

Zadanie 7f

Use the data below, together with sections 9 and 12 of the data booklet, to determine the lattice enthalpy of potassium iodide. K(s) → K(g)  ΔH = +89 kJ mol⁻¹ I₂(s) → I₂(g)…

Chemia IBPaper 1, maj 2024, TZ1wzorowane1 pktzamkniętełatwe (szac.)

Zadanie 16

Which change represents the first electron affinity of chlorine? A. Cl₂(g) → 2 Cl(g) B. Cl(g) + e⁻ → Cl⁻(g) C. Cl(g) → Cl⁺(g) + e⁻ D. Cl⁻(g) → Cl(g) + e⁻

Chemia IBPaper 1, listopad 2023, TZ1wzorowane1 pktzamknięteśrednie (szac.)

Zadanie 14

Which changes are exothermic? I. CH₄(g) + 2 O₂(g) → CO₂(g) + 2 H₂O(l) II. Cl(g) + e⁻ → Cl⁻(g) III. H₂O(l) → H₂O(g) A. I and II only B. I and III only C. II and III only D. I, II and III