Given that the standard molar enthalpies of formation of $\mathrm{NO(g)}$ and $\mathrm{NO_2(g)}$ are, respectively, $90.3\ \mathrm{kJ\,mol^{-1}}$ and $33.2\ \mathrm{kJ\,mol^{-1}}$, the enthalpy change for the reaction $2\mathrm{NO(g)} + \mathrm{O_2(g)} \rightarrow 2\mathrm{NO_2(g)}$ is