Input interpretation
oxygen + aluminum sulfide ⟶ sulfur dioxide + aluminum oxide
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 Set the number of atoms in the reactants equal to the number of atoms in the products for O, Al and S: O: | 2 c_1 = 2 c_3 + 3 c_4 Al: | 2 c_2 = 2 c_4 S: | 3 c_2 = c_3 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 = 9/2 c_2 = 1 c_3 = 3 c_4 = 1 Multiply by the least common denominator, 2, to eliminate fractional coefficients: c_1 = 9 c_2 = 2 c_3 = 6 c_4 = 2 Substitute the coefficients into the chemical reaction to obtain the balanced equation: Answer: | | 9 + 2 ⟶ 6 + 2
Structures
+ ⟶ +
Names
oxygen + aluminum sulfide ⟶ sulfur dioxide + aluminum oxide
Reaction thermodynamics
Enthalpy
| oxygen | aluminum sulfide | sulfur dioxide | aluminum oxide molecular enthalpy | 0 kJ/mol | -724 kJ/mol | -296.8 kJ/mol | -1676 kJ/mol total enthalpy | 0 kJ/mol | -1448 kJ/mol | -1781 kJ/mol | -3352 kJ/mol | H_initial = -1448 kJ/mol | | H_final = -5133 kJ/mol | ΔH_rxn^0 | -5133 kJ/mol - -1448 kJ/mol = -3685 kJ/mol (exothermic) | | |
Chemical names and formulas
| oxygen | aluminum sulfide | sulfur dioxide | aluminum oxide Hill formula | O_2 | Al_2S_3 | O_2S | Al_2O_3 name | oxygen | aluminum sulfide | sulfur dioxide | aluminum oxide IUPAC name | molecular oxygen | thioxo-(thioxoalumanylthio)alumane | sulfur dioxide | dialuminum;oxygen(2-)
Substance properties
| oxygen | aluminum sulfide | sulfur dioxide | aluminum oxide molar mass | 31.998 g/mol | 150.1 g/mol | 64.06 g/mol | 101.96 g/mol phase | gas (at STP) | solid (at STP) | gas (at STP) | solid (at STP) melting point | -218 °C | 1100 °C | -73 °C | 2040 °C boiling point | -183 °C | 1500 °C | -10 °C | density | 0.001429 g/cm^3 (at 0 °C) | 2.02 g/cm^3 | 0.002619 g/cm^3 (at 25 °C) | solubility in water | | decomposes | | surface tension | 0.01347 N/m | | 0.02859 N/m | dynamic viscosity | 2.055×10^-5 Pa s (at 25 °C) | | 1.282×10^-5 Pa s (at 25 °C) | odor | odorless | | | odorless
Units
