The standard enthalpy of formation of NO₂(g) is 33.1 kJ/mol.

Last updated: 7/28/2022

The standard enthalpy of formation of NO₂(g) is 33.1 kJ/mol. What is the average bond dissociation enthalpy of a nitrogen-oxygen bond in NO₂ given that the bond dissociation energies for N₂ and O₂ are 945.4 and 498.4 kJ/mol, respectively. (A) 502.1 kJ/mol (B) 1410.7 kJ/mol (C) 469.0 kJ/mol (D) 705.4 kJ/mol (E) 738.5 kJ/mol