- The balanced equation for the Haber process is N₂(g) + 3H₂(g) → 2NH₃(g). - The stoichiometric coefficients are 1 for N₂, 3 for H₂, and 2 for NH₃. - At constant temperature and pressure, the volume ratio of reacting gases and gaseous products is equal to the mole ratio (and stoichiometric coefficient ratio).