Question

ICO Given the following enthalpies, cal Enthalpies (kJ/mol): howing enthalpies, calculate the lattice energy of Nal and CsCls), respectively. Inal(s)] = -288; AH (Na) = 107; IE(Na) = 496: AH.(1.) = 62: D(I—I) = 149, EAT) = -295; SCI(8)] = -443; AH.(Cs) = 78: IE(Cs) = 376; D(CI_CI) = 244; EA[Cl] = -349. Na (s) + + Iz (9) Hfy Na I (3) Na(9) I (9) Nat(9) I- -288 = 1074490 +33 + 149 -295 -288x=4135 + 288 289 X= 701 5 kJ/mol

ICO Given the following enthalpies, cal Enthalpies (kJ/mol): howing enthalpies, calculate the lattice energy of Nal and CsCls), respectively. Inal(s)] = -288; AH (Na) = 107; IE(Na) = 496: AH.(1.) = 62: D(I—I) = 149, EAT) = -295; SCI(8)] = -443; AH.(Cs) = 78: IE(Cs) = 376; D(CI_CI) = 244; EA[Cl] = -349. Na (s) + + Iz (9) Hfy Na I (3) Na(9) I (9) Nat(9) I- -288 = 1074490 +33 + 149 -295 -288x=4135 + 288 289 X= 701 5 kJ/mol

need help with (CsCl)

Answer 1

solution :- Cs (g) + ₃ zig) 1 x D(U-4) - Cachs; Arif = - 443 1 Alls Cs go clips w EA Og Lattice energy According to Hess's law, Ant = AMs + 1E + ₃D +EA + Lattice enersy Putting values from given date in qustion, -443 = 78+376 +2X244 – 349 + Lathu energy

= -443 = 227+ Lathia energi - Lattiu energy =-670 kg/mol mo : Lattice energy af alls = 1-670] Ky mal mo