Determine the volumetric ratios according to the Gay-Lussac law for the following reactions: SO2 + O2 – SO3;

Determine the volumetric ratios according to the Gay-Lussac law for the following reactions: SO2 + O2 – SO3; NH3 + O2 – NO + H2O; H2S + O2 – SO2 + H2O; CH4 + O2 – CO2 + H2O.

Gay-Lussac’s law shows that the same volumes of gases at the same temperature and pressure contain an equal number of molecules, respectively, one molecule of a substance has the same number of molecules of another substance, which is determined by the coefficients of the reaction equation.
2SO2 + O2 = 2SO3 (2: 1: 2).
4NH3 + 5O2 = 4NO + 6H2O (4: 5: 4: 6).
2H2S + 3O2 = 2SO2 + 2H2O (2: 3: 2: 2).
CH4 + 2O2 = CO2 + 2H2O (1: 2: 1: 2).