The Standard Enthalpy of Formation of Ammonia at 25 ^$\circ$ C Is -46

Multiple Choice

The standard enthalpy of formation of ammonia at 25 ^$\circ$ C is -46.3 kJ/mol. Estimate the N-H bond enthalpy at this temperature.(Given: BE(N $\equiv$ N) = 941.4 kJ/mol, BE(H-H) = 436.4 kJ/mol)

A) 360 kJ/mol
B) 383 kJ/mol
C) 391 kJ/mol
D) 459 kJ/mol
E) 475 kJ/mol