Worksheet: Born–Haber Cycle Calculations

In this worksheet, we will practice using Born–Haber cycles to calculate enthalpy changes for the formation and dissociation of ionic lattices.

Q1:

Using the table below, determine the crystal lattice energy of KBr.

Δ𝐻sub(kJ/mol)IE (kJ/mol)EA (kJ/mol)Δ𝐻dis(kJ/mol)Δ𝐻⦡f(kJ/mol)
Li162Li520Fβˆ’328F279LiFβˆ’612LiClβˆ’612LiBrβˆ’612
Na108Na496Clβˆ’349Cl2122NaFβˆ’569NaClβˆ’411NaBrβˆ’360
K90K419Brβˆ’325Br2112KFβˆ’562KClβˆ’436KBrβˆ’392

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