Determine the Standard Enthalpy of Formation for NO Given the Following

Multiple Choice

Determine the standard enthalpy of formation for NO given the following information about the formation of NO₂ under standard conditions, and $\Delta$ H ${ } _ { f } ^ { \circ } \mathrm { }$ (NO₂) = + 33.2 kJ/mol.
2NO(g) + O₂(g) $\rightarrow$ 2NO₂(g) $\Delta$ H_rxn = -114.2 kJ

A) 90.3 kJ/mol
B) -90.3 kJ/mol
C) -147.4 kJ/mol
D) -180.6 kJ/mol
E) -73.7 kJ/mol