Calculate the magnitude of the enthalpy change, and determine if the reaction is exothermic or endothermic for the following reaction: NH3 + 3F2 ⟶ NF3 + 3HF
A. 870.9 kJ mol–1 , exothermic
B. 870.9 kJ mol–1 , endothermic
C. 1112 kJ mol–1 , exothermic
D. 1112 kJ mol–1 , endothermic
E. 290.3 kJ mol–1 , endothermic