Transcript Al (g) + 3/2 Br 2 (l)

The Born-Haber
Al 3+ (g) + 3 Br (g)
Cycle - AlBr3
I.E.3 = 2744.8 kJ/mol
3 x E.A. = 3 x -324.6 kJ/mol
= -973.8 kJ/mol
I.E.2 = 1816.7 kJ/mol
Al 3+ (g) + 3 Br - (g)
I.E.1 = 577.5 kJ/mol
Al (g) + 3 Br (g)
3/2 x Bond Energy = 3/2 x 192.8 kJ/mol
= 289.2 kJ/mol
Al (g) + 3/2 Br2 (g)
Al (g) + 3/2 Br2 (l)
3/2 x ΔHvap = 3/2 x 30.5 kJ/mol
= 45.8 kJ/mol
LATTICE
ENERGY
= -5331.1
kJ/mol
ΔHfus + ΔHvap = 303.7 kJ/mol
Al (s) + 3/2 Br2 (l)
ΔHformation= -527.2 kJ/mol
AlBr3 (s)
AlBr3