Given: Enthalpy of atomisation of calcium =+ 178 kJ First ionisation energy of calcium =+590 kJ Second ionisation energy of calcium = +1145 kJ Enthalpy of atomisation of chlorine =+ 121 kJ Electron affinity of chlorine Lattice energy of calcium chloride =- 2258 kJ = - 346 kJ Construct a Born-Haber cycle for calcium chloride, CaCl2 by using the data given above. Hence, calculate the enthalpy of formation of calcium chloride. b. The enthalpy of solution for calcium chloride crystal is -81.3 kJ mol. Based on the data from the above Born-Haber cycle, calculate the enthalpy change for the reaction below: Ca (g) + 2C1 (g)–→ Ca* (aq) + 2Cl (aq)
Given: Enthalpy of atomisation of calcium =+ 178 kJ First ionisation energy of calcium =+590 kJ Second ionisation energy of calcium = +1145 kJ Enthalpy of atomisation of chlorine =+ 121 kJ Electron affinity of chlorine Lattice energy of calcium chloride =- 2258 kJ = - 346 kJ Construct a Born-Haber cycle for calcium chloride, CaCl2 by using the data given above. Hence, calculate the enthalpy of formation of calcium chloride. b. The enthalpy of solution for calcium chloride crystal is -81.3 kJ mol. Based on the data from the above Born-Haber cycle, calculate the enthalpy change for the reaction below: Ca (g) + 2C1 (g)–→ Ca* (aq) + 2Cl (aq)
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter3: Atomic Shells And Classical Models Of Chemical Bonding
Section: Chapter Questions
Problem 7P
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