\({2 \mathrm{NaNO}_{3} \frac{500\,^{\circ} \mathrm{C}}{800\,^{\circ} \mathrm{C}} 2 \mathrm{NaNO}_{2}+\mathrm{O}_{2}} \)
\({4 \mathrm{NaNO}_{3} \stackrel{800\,^{\circ} \mathrm{C}}{\longrightarrow} 2 \mathrm{Na}_{2} \mathrm{O}+5 \mathrm{O}_{2}+2 \mathrm{N}_{2}}\)