Input interpretation
sulfuric acid + magnesium ⟶ water + sulfur dioxide + magnesium sulfate
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, O, S and Mg: H: | 2 c_1 = 2 c_3 O: | 4 c_1 = c_3 + 2 c_4 + 4 c_5 S: | c_1 = c_4 + c_5 Mg: | c_2 = 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_2 = 1 and solve the system of equations for the remaining coefficients: c_1 = 2 c_2 = 1 c_3 = 2 c_4 = 1 c_5 = 1 Substitute the coefficients into the chemical reaction to obtain the balanced equation: Answer: | | 2 + ⟶ 2 + +
Structures
+ ⟶ + +
Names
sulfuric acid + magnesium ⟶ water + sulfur dioxide + magnesium sulfate
Reaction thermodynamics
Enthalpy
| sulfuric acid | magnesium | water | sulfur dioxide | magnesium sulfate molecular enthalpy | -814 kJ/mol | 0 kJ/mol | -285.8 kJ/mol | -296.8 kJ/mol | -1285 kJ/mol total enthalpy | -1628 kJ/mol | 0 kJ/mol | -571.7 kJ/mol | -296.8 kJ/mol | -1285 kJ/mol | H_initial = -1628 kJ/mol | | H_final = -2153 kJ/mol | | ΔH_rxn^0 | -2153 kJ/mol - -1628 kJ/mol = -525.4 kJ/mol (exothermic) | | | |
Chemical names and formulas
| sulfuric acid | magnesium | water | sulfur dioxide | magnesium sulfate Hill formula | H_2O_4S | Mg | H_2O | O_2S | MgO_4S name | sulfuric acid | magnesium | water | sulfur dioxide | magnesium sulfate