Input interpretation
chlorine + iron ⟶ iron(II) chloride
Balanced equation
Balance the chemical equation algebraically: + ⟶ Add stoichiometric coefficients, c_i, to the reactants and products: c_1 + c_2 ⟶ c_3 Set the number of atoms in the reactants equal to the number of atoms in the products for Cl and Fe: Cl: | 2 c_1 = 2 c_3 Fe: | 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_1 = 1 and solve the system of equations for the remaining coefficients: c_1 = 1 c_2 = 1 c_3 = 1 Substitute the coefficients into the chemical reaction to obtain the balanced equation: Answer: | | + ⟶
Structures
+ ⟶
Names
chlorine + iron ⟶ iron(II) chloride
Reaction thermodynamics
Enthalpy
| chlorine | iron | iron(II) chloride molecular enthalpy | 0 kJ/mol | 0 kJ/mol | -341.8 kJ/mol total enthalpy | 0 kJ/mol | 0 kJ/mol | -341.8 kJ/mol | H_initial = 0 kJ/mol | | H_final = -341.8 kJ/mol ΔH_rxn^0 | -341.8 kJ/mol - 0 kJ/mol = -341.8 kJ/mol (exothermic) | |
Chemical names and formulas
| chlorine | iron | iron(II) chloride Hill formula | Cl_2 | Fe | Cl_2Fe name | chlorine | iron | iron(II) chloride IUPAC name | molecular chlorine | iron | dichloroiron
Substance properties
| chlorine | iron | iron(II) chloride molar mass | 70.9 g/mol | 55.845 g/mol | 126.7 g/mol phase | gas (at STP) | solid (at STP) | solid (at STP) melting point | -101 °C | 1535 °C | 677 °C boiling point | -34 °C | 2750 °C | density | 0.003214 g/cm^3 (at 0 °C) | 7.874 g/cm^3 | 3.16 g/cm^3 solubility in water | | insoluble |
Units
