The standard enthalpy change for the sublimation of iodine I2 can be calculated by adding the standard enthalpy change of formation of iodine molecules and the enthalpy of vaporization of iodine.Sublimation is the process of a solid changing directly into a gas, bypassing the liquid phase. In this case, we are given the standard enthalpy change of formation of iodine molecules -62.4 kJ/mol and the enthalpy of vaporization of iodine 41.7 kJ/mol .The standard enthalpy change for sublimation H_sub can be calculated using the following equation:H_sub = H_f + H_vapwhere H_f is the standard enthalpy change of formation and H_vap is the enthalpy of vaporization.Plugging in the given values:H_sub = -62.4 kJ/mol + 41.7 kJ/mol H_sub = -20.7 kJ/molTherefore, the standard enthalpy change for the sublimation of iodine I2 is -20.7 kJ/mol.