How much energy is required to decompose 765 g of PCl₃ according to the reaction below? The molar mass of PCl₃ is 137.32 g/mol.
4PCl₃ -> P4 + 6Cl₂
deltaHrxn= 1267 kJ
a) 2.31E3 kJ
b) 4.33E3 kJ
c) 6.72E3 kJ
d) 1.68E3 kJ