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Question bank

Original exam-style questions, mapped to your syllabus. Answers are checked for mathematical equivalence and every attempt updates your mastery.

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12 questions

SA-AC-BH-0011 markL1 FoundationCalculatorDefinitions
Lattice energy is the enthalpy change when
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-BH-0101 markL1 FoundationCalculatorDefinitions
Atomisation enthalpies are always
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-BH-0031 markL2 StandardCalculatorFactors
Which has the most exothermic lattice energy?
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-BH-0041 markL2 StandardCalculatorDefinitions
The second electron affinity of oxygen is
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-BH-0051 markL2 StandardCalculatorDefinitions
The atomisation enthalpy of chlorine is
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-BH-0061 markL2 StandardCalculatorFactors
The difference between experimental and theoretical lattice energies of AgI is large because
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-BH-0081 markL2 StandardCalculatorFactors
Hydration enthalpy is more exothermic for
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-BH-0121 markL2 StandardCalculatorFactors
Lattice energy becomes less exothermic from NaF to NaI because
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-BH-0023 marksL3 ExamCalculatorBorn–Haber cycles
Calculate the lattice energy of KCl (kJ mol⁻¹): ΔfH=−437\Delta_fH=-437; ΔatH(K)=+89\Delta_\text{at}H(\mathrm{K})=+89; IE(K) =+419=+419; ΔatH(Cl)=+122\Delta_\text{at}H(\mathrm{Cl})=+122; EA(Cl) =−349=-349.

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Salam Academy Original Practice · Proposed mark scheme
SA-AC-BH-0072 marksL3 ExamCalculatorBorn–Haber cycles
ΔHlatt(NaCl)=−787\Delta H_\text{latt}(\mathrm{NaCl})=-787; ΔhydH(Na+)=−406\Delta_\text{hyd}H(\mathrm{Na^+})=-406; ΔhydH(Cl−)=−377\Delta_\text{hyd}H(\mathrm{Cl^-})=-377 kJ mol⁻¹. Calculate ΔsolH\Delta_\text{sol}H.

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Salam Academy Original Practice · Proposed mark scheme
SA-AC-BH-0091 markL3 ExamCalculatorBorn–Haber cycles
In the Born–Haber cycle for MgCl₂, the electron affinity term is
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-BH-0112 marksL3 ExamCalculatorBorn–Haber cycles
Using the cycle for NaCl, ΔfH=−411\Delta_fH=-411, ΔHlatt=−787\Delta H_\text{latt}=-787, ΔatH(Na)=+107\Delta_\text{at}H(\mathrm{Na})=+107, ΔatH(Cl)=+122\Delta_\text{at}H(\mathrm{Cl})=+122, EA(Cl) =−349=-349 kJ mol⁻¹. Calculate the first ionisation energy of sodium.

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Salam Academy Original Practice · Proposed mark scheme