Use the bond energies provided to estimate Δ H° for the reaction below.

PCl₃(g) + Cl₂(g) → PCl₅(l)

Bond Bond Energy (kJ/mol)
Cl-Cl 243
P-Cl 331

A. -243 kJ
B. -905 kJ
C. -662 kJ
D. -67 kJ
E. -419 kJ