Ions and Ionic Compounds. (Question 8.46)
Use the following data to estimate ΔH°f for magnesium fluoride.
Mg(s) + F2(g) MgF2(s)
Lattice Energy -3916 kJ/mol
First ionization energy of Mg 735 kJ/mol
Second ionization energy of Mg 1445 kJ/mol
Electron affinity of F -328 kJ/mol
Bond energy of F2 154 kJ/mol
Enthalpy of sublimation of Mg 150. kJ/mol
ΔH°f =_______kJ/mol
2007-07-27 10:40:44 · 1 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
sorry simon but it saids that it's wrong but thanx for tryin. im stuck on this problem i have no idea what to do so if anyone can help thanx!!!
2007-07-27 13:29:17 · update #1
6th + 5th + 2nd + 3rd + (2 x 4th) + 1st.
It's a normal Born-Haber cycle, but you have to remember there are 2 x F atoms.
2007-07-30 11:33:54 · answer #1 · answered by Gervald F 7 · 0⤊ 1⤋