Input interpretation
aluminum + iron(II) oxide ⟶ iron + 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 Al, Fe and O: Al: | c_1 = 2 c_4 Fe: | c_2 = c_3 O: | c_2 = 3 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_4 = 1 and solve the system of equations for the remaining coefficients: c_1 = 2 c_2 = 3 c_3 = 3 c_4 = 1 Substitute the coefficients into the chemical reaction to obtain the balanced equation: Answer: | | 2 + 3 ⟶ 3 +
Structures
+ ⟶ +
Names
aluminum + iron(II) oxide ⟶ iron + aluminum oxide
Reaction thermodynamics
Enthalpy
| aluminum | iron(II) oxide | iron | aluminum oxide molecular enthalpy | 0 kJ/mol | -272 kJ/mol | 0 kJ/mol | -1676 kJ/mol total enthalpy | 0 kJ/mol | -816 kJ/mol | 0 kJ/mol | -1676 kJ/mol | H_initial = -816 kJ/mol | | H_final = -1676 kJ/mol | ΔH_rxn^0 | -1676 kJ/mol - -816 kJ/mol = -860 kJ/mol (exothermic) | | |
Entropy
| aluminum | iron(II) oxide | iron | aluminum oxide molecular entropy | 28.3 J/(mol K) | 61 J/(mol K) | 27 J/(mol K) | 51 J/(mol K) total entropy | 56.6 J/(mol K) | 183 J/(mol K) | 81 J/(mol K) | 51 J/(mol K) | S_initial = 239.6 J/(mol K) | | S_final = 132 J/(mol K) | ΔS_rxn^0 | 132 J/(mol K) - 239.6 J/(mol K) = -107.6 J/(mol K) (exoentropic) | | |
Chemical names and formulas
| aluminum | iron(II) oxide | iron | aluminum oxide Hill formula | Al | FeO | Fe | Al_2O_3 name | aluminum | iron(II) oxide | iron | aluminum oxide IUPAC name | aluminum | oxoiron | iron | dialuminum;oxygen(2-)
Substance properties
| aluminum | iron(II) oxide | iron | aluminum oxide molar mass | 26.9815385 g/mol | 71.844 g/mol | 55.845 g/mol | 101.96 g/mol phase | solid (at STP) | solid (at STP) | solid (at STP) | solid (at STP) melting point | 660.4 °C | 1360 °C | 1535 °C | 2040 °C boiling point | 2460 °C | | 2750 °C | density | 2.7 g/cm^3 | 5.7 g/cm^3 | 7.874 g/cm^3 | solubility in water | insoluble | insoluble | insoluble | surface tension | 0.817 N/m | | | dynamic viscosity | 1.5×10^-4 Pa s (at 760 °C) | | | odor | odorless | | | odorless
Units
