Question

What is the standard enthalpy change for the sublimation of iodine given the following information?Iodine (s) → Iodine (g)ΔHf° (Iodine, s) = 0 kJ/molΔHsub° (Iodine) = 62.4 kJ/mol Calculate ΔH° for the sublimation of iodine.

Answer 1

The standard enthalpy change for the sublimation of iodine  H  is given by the enthalpy of sublimation  Hsub  for iodine. In this case, the enthalpy of formation  Hf  for solid iodine is 0 kJ/mol, which means there is no additional energy change when considering the formation of solid iodine.Therefore, the standard enthalpy change for the sublimation of iodine  H  is equal to the enthalpy of sublimation  Hsub  for iodine:H = Hsub  Iodine  = 62.4 kJ/mol