An important step in the synthesis of nitric acid is the conversion of ammonia to nitric oxide. H° f [NH3(g)] = -45.9 kJ/mol;
H° f [NO(g)] = 90.3 kJ/mol; H°f[H2O(g)] = -241.8 kJ/mol
4NH3(g) + 5O2(g) 4NO(g) + 6H2O(g)
Calculate H° rxn for this reaction.
A. -906.0 kJ
B. -197.4 kJ
C. 197.4 kJ
D. 906.0 kJ