Use the born-haber cycle to calculate the standard enthalpy of formation for SRI2 (strontium iodide)

Born-Haber Process - "Born-Haber process applies Hess's law to calculate the lattice enthalpy (this is a thermodynamic term which equals to the total heat content of a system), by comparing the standard enthalpy change of formation of ionic compound (from the elements) to the enthalpy required to make gaseous ions from the elements".

Explanation:

Now the calculations done for SRI2 are as follows:

Enthalpy of Sublimation of Sr (s) = 164 kJ per mol, 1st ionization energy of Sr (g) = 549 kJ per mol, 2nd ionization energy of Sr (g) = 1064 kJ per mol, Enthalpy dissociation energy of I2 (s) = 62.4 kJ per mol, Bond dissociation energy of I2 (g) = 152.55 kJ per mol, 1st electron affinity of I (g) = - 295.15 kJ per mol, Lattice energy of SrI2 (s) = -1959.75 kJ per mol.

Note - the terms mentioned in the brackets are as, S - solid form, g - Gaseous form.