The lattice energy of solid NaCl is 180 kcal per mol. The dissolution of the solid in…
Chemistry · JEE Advanced · NTA Exams — Chemical Thermodynamics
The lattice energy of solid NaCl is 180 kcal per mol. The dissolution of the solid in water in the form of ions is endothermic to the extent of 1 kcal per mol. If the solvation energies of Na+ and Cl– ions are in the ratio
6 : 5, what is the enthalpy of hydration of sodium ion ?
6 : 5, what is the enthalpy of hydration of sodium ion ?
- – 85.6 kcal/mol
- – 97.5 kcal/mol
- 82.6 kcal/mol
- + 100 kcal/mol
Answer
(B) – 97.5 kcal/mol
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