Input interpretation
sodium hydroxide + nitrogen dioxide ⟶ water + sodium nitrate + sodium nitrite
Balanced equation
Balance the chemical equation algebraically: + ⟶ + + Add stoichiometric coefficients, c_i, to the reactants and products: c_1 + c_2 ⟶ c_3 + c_4 + c_5 Set the number of atoms in the reactants equal to the number of atoms in the products for H, Na, O and N: H: | c_1 = 2 c_3 Na: | c_1 = c_4 + c_5 O: | c_1 + 2 c_2 = c_3 + 3 c_4 + 2 c_5 N: | c_2 = c_4 + c_5 Since the coefficients are relative quantities and underdetermined, choose a coefficient to set arbitrarily. To keep the coefficients small, the arbitrary value is ordinarily one. For instance, set c_3 = 1 and solve the system of equations for the remaining coefficients: c_1 = 2 c_2 = 2 c_3 = 1 c_4 = 1 c_5 = 1 Substitute the coefficients into the chemical reaction to obtain the balanced equation: Answer: | | 2 + 2 ⟶ + +
Structures
+ ⟶ + +
Names
sodium hydroxide + nitrogen dioxide ⟶ water + sodium nitrate + sodium nitrite
Reaction thermodynamics
Enthalpy
| sodium hydroxide | nitrogen dioxide | water | sodium nitrate | sodium nitrite molecular enthalpy | -425.8 kJ/mol | 33.2 kJ/mol | -285.8 kJ/mol | -467.9 kJ/mol | -359 kJ/mol total enthalpy | -851.6 kJ/mol | 66.4 kJ/mol | -285.8 kJ/mol | -467.9 kJ/mol | -359 kJ/mol | H_initial = -785.2 kJ/mol | | H_final = -1113 kJ/mol | | ΔH_rxn^0 | -1113 kJ/mol - -785.2 kJ/mol = -327.5 kJ/mol (exothermic) | | | |
Gibbs free energy
| sodium hydroxide | nitrogen dioxide | water | sodium nitrate | sodium nitrite molecular free energy | -379.7 kJ/mol | 51.3 kJ/mol | -237.1 kJ/mol | -366 kJ/mol | -284.6 kJ/mol total free energy | -759.4 kJ/mol | 102.6 kJ/mol | -237.1 kJ/mol | -366 kJ/mol | -284.6 kJ/mol | G_initial = -656.8 kJ/mol | | G_final = -887.7 kJ/mol | | ΔG_rxn^0 | -887.7 kJ/mol - -656.8 kJ/mol = -230.9 kJ/mol (exergonic) | | | |
Chemical names and formulas
| sodium hydroxide | nitrogen dioxide | water | sodium nitrate | sodium nitrite Hill formula | HNaO | NO_2 | H_2O | NNaO_3 | NNaO_2 name | sodium hydroxide | nitrogen dioxide | water | sodium nitrate | sodium nitrite IUPAC name | sodium hydroxide | Nitrogen dioxide | water | sodium nitrate | sodium nitrite