Xt(s) + Cl2(g) -------------------> XtCl2(s) Hf =
same reaction takes place six different stages
Xt(s) --------------------> Xt(g) H1 = 170KJ sublimation energy
Xt(g) ---------------> Xt+(g) + e^- H2 = 430KJ first ionisation energy
Xt^+(g)------------------> Xt^2+ (g) +e^- H3 = 731KJ/mole second ionisation energy
Cl2(g)-------------------------> 2Cl(g) H4 = 239KJ bond energy of Cl2
2Cl(g) + 2e^- -----------> 2Cl^- H5 = -348.7*2 = -697.4KJ electron affinity of Cl
Xt^2+ (g) + 2Cl^- (g) -----------> XtCl2(s) H6 = -2260KJ/mole
from Hess law
H0f = H1 + H2 + H3 + H4 +H5 + H6
H0f = 170+430+731+239-697.4 -2260
H0f = -1387.4KJ/mole >>>>>answer
Born-Fajans-Haber Cycle Suppose a chemist discovers a new metallic element and names it "Xtrinsium" (Xt) Xt...
Using the Born Haber cycle in the previous question, and the following energies, calculate the standard energy of formation for Srl2 Enthalpy of sublimation of Sr(s) = 164 kJ/mol 1st ionization energy of Sr(g) = 549 kJ/mol 2nd ionization energy of Sr(g) - 1064 kJ/mol Enthalpy of sublimation of 12(s) = 62 kJ/mol Bond dissociation energy of 12(g) - 153 kJ/mol 1st electron affinity of l(g) = -295 kJ/mol Lattice energy of Srlz(s) = -1960 kJ/mol *Note: Do not include...
Part I. Use a Born-Haber cycle to calculate the lattice energy of KCl from the following data. (5 marks) Ionization energy of K(g) = 444.0 kJ mol-1 Electron Affinity of Cl(g) = -381.0 kJ mol-1 Energy to Sublime K(s) = 152.0 kJ mol-1 Bond energy of Cl2 = 201.0 kJ mol-1 ∆rH for K(s) + 1/2 Cl2(g) ↔ KCl(s) = -480.0 kJ mol-1 art II. Using the lattice energy calculated in part I determine the enthalpy of solution potassium chloride...
1)a. Using the Born Haber cycle, determine the enthalpy for lattice formation of MgO. Mg (s), ΔHsub = +148 kJ/mol bond dissociation energy for O2 = +499 kJ/mol 1st ionization energy for Mg = +738 kJ/mol 1st electron affinity for O = –141 kJ/mol 2nd ionization energy for Mg = +1450 kJ/mol 2nd electron affinity for O = +844 kJ/mol MgO(s), enthalpy of formation = –602 kJ/mol 1)b. Calculate the lattice formation energy of MgO using the Madelung constant....
Construct a Born-Haber cycle and calculate the lattice energy of CaC2 (s). Note that this solid contains the diatomic ion C22–.Useful Information:?H°f (CaC2(s)) ?Hsub (Ca (s)) ?Hsub (C (s)) Bond dissociation energy of C2 (g) = +614 kJ/molFirst ionization energy of Ca (g) = +590 kJ/mol Second ionization energy of Ca (g) = +1143 kJ/mol First electron affinity of C2 (g) = –315 kJ/mol Second electronaffinity of C2 (g) = +410 kJ/mol= –60 kJ/mol = +178 kJ/mol = +717 kJ/mol
7. Use the Born Haber cycle and the given information to determine the net energy change (in kJ/mol) that takes place in the formation of KF(s) from the elements: Ks) + F2@KFS) Heat of sublimation of K = 89.2 kJ/mol Bond dissociation energy for F2 = 158 kJ/mol Lattice Energy of KF = 821 kJ/mol Eca for F = -328 kJ/mol E; for K = 418.8 kJ/mol
4) Calculate the lattice enthalpy for calcium fluoride using the Born-Haber cycle method, using the provided table. (Show all your work; 2 points) Enthalpies, AH/(kJ mol) +192 Process Sublimation of Ca(s) Ionization of Ca(g) Dissociation of F2(g) Electron gain by F(g) Formation of CaF (s) +1735 to Ca(ag +157 -328 -1220
3. Draw the Bom Haber Cycle and calculate the lattice energies for LiF, MgO, and CaC12 using the data provided in the table below. This can be done on a separate page if you are working off this template. AH (1/2 B.E.) Electon Affinity Ionization Sublimation AH EA Energy Ionic Compoud F 80 kJ/mol 328 kJ/mol Li 520 kJ/mol 155 kJ/mol LiF -594 kJ/mol 0 249.4 kJ/mol 141 kJ/mol (15) . Mg 738 kJ/mol (19) 148 kJ/mol MgO -601 kJ/mol...
The common oxidation number for an alkaline earth metal is +2. Using the Kapustinskii equation and Born-Haber cycles, show that CaCl is an exothermic compound, where CaCl may have NaCl structure. Use a suitable analogy to estimate an ionic radius for Ca. Use a radius for Ca. (rg and rca is 1.38 and 1.00 A, respectively.) suitable analogy to estimate an ionic 0.345 1.21 2 Z,n U To where En is the # of ions in the empirical formula, the...
Hello, please help solve and show all work thank you. Create the Born-Haber cycle and calculate the lattice energy of lithium oxide (Li2O) from the following data Quantity Ionization energy of Li(g) Electron affinity of O(g) for 2e Vaporization energy of Li(s) Bond energy of O2(g) Reaction enthalpy: 2 Li (s) + O2 Magnitude (kJ/mol) 519 603 147 499 (g) → Li20(s) a. -3081 kJ/mol b. -2586 kJ/mol c. -2205 kJ/mol d. -2972 kJ/mol e. -2831 kJ/mol The freezing point...
7) For the ionic solid AlzOs a) Determine its lattice energy using the appropriate Born-Haber cycle and the following values. All values in kJ/mol: IEi (A)-557.5:IE2 (A)-1817; IEs (A)-2745; IE(Al) 11580 E (0)-1314; IE2 (0) 3388; IEs (O)-5300 ΔΗ"a (O) =-141 (first electron affinity) ; ΔΗ'EA AH (Al) 330; AHa (O)-249;AH (Al Os)--1669.8 (o)- 798 (second electron affinity) b) Al:O, crystallizes in a corundum structure. How does the above lattice energy compare to the lattice energy determined by an electrostatic...