JEE Main 2026 Jan 22 Shift 2, Chemistry Q22: Hess’s Law and Bond Energy
JEE Main2026Jan 22, Shift 2Chemistry
Q.
If the enthalpy of sublimation of Li is 155 kJ mol, enthalpy of dissociation of is 150 kJ mol, ionization enthalpy of Li is 520 kJ mol, electron gain enthalpy of F is kJ mol, standard enthalpy of formation of LiF is kJ mol. The magnitude of lattice enthalpy of LiF is ______ kJ mol (nearest integer).
Correct answer: 1031
Solution
Born–Haber cycle for :
kJ mol.
Magnitude .
Concept behind this question
Hess’s Law and Bond EnergyNotes, formulas and examples →More previous year questions on Hess’s Law and Bond Energy
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