Input interpretation
hydrogen chloride + sodium sulfite ⟶ water + sulfur dioxide + sodium chloride
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 Cl, H, Na, O and S: Cl: | c_1 = c_5 H: | c_1 = 2 c_3 Na: | 2 c_2 = c_5 O: | 3 c_2 = c_3 + 2 c_4 S: | c_2 = c_4 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_2 = 1 and solve the system of equations for the remaining coefficients: c_1 = 2 c_2 = 1 c_3 = 1 c_4 = 1 c_5 = 2 Substitute the coefficients into the chemical reaction to obtain the balanced equation: Answer: | | 2 + ⟶ + + 2
Structures
+ ⟶ + +
Names
hydrogen chloride + sodium sulfite ⟶ water + sulfur dioxide + sodium chloride
Reaction thermodynamics
Enthalpy
| hydrogen chloride | sodium sulfite | water | sulfur dioxide | sodium chloride molecular enthalpy | -92.3 kJ/mol | -1101 kJ/mol | -285.8 kJ/mol | -296.8 kJ/mol | -411.2 kJ/mol total enthalpy | -184.6 kJ/mol | -1101 kJ/mol | -285.8 kJ/mol | -296.8 kJ/mol | -822.4 kJ/mol | H_initial = -1285 kJ/mol | | H_final = -1405 kJ/mol | | ΔH_rxn^0 | -1405 kJ/mol - -1285 kJ/mol = -119.6 kJ/mol (exothermic) | | | |
Gibbs free energy
| hydrogen chloride | sodium sulfite | water | sulfur dioxide | sodium chloride molecular free energy | -95.3 kJ/mol | -10125 kJ/mol | -237.1 kJ/mol | -300.1 kJ/mol | -384.1 kJ/mol total free energy | -190.6 kJ/mol | -10125 kJ/mol | -237.1 kJ/mol | -300.1 kJ/mol | -768.2 kJ/mol | G_initial = -10316 kJ/mol | | G_final = -1305 kJ/mol | | ΔG_rxn^0 | -1305 kJ/mol - -10316 kJ/mol = 9010 kJ/mol (endergonic) | | | |
Chemical names and formulas
| hydrogen chloride | sodium sulfite | water | sulfur dioxide | sodium chloride Hill formula | ClH | Na_2O_3S | H_2O | O_2S | ClNa name | hydrogen chloride | sodium sulfite | water | sulfur dioxide | sodium chloride IUPAC name | hydrogen chloride | disodium sulfite | water | sulfur dioxide | sodium chloride