Input interpretation
zinc + iron(II) chloride ⟶ iron + zinc 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 Set the number of atoms in the reactants equal to the number of atoms in the products for Zn, Cl and Fe: Zn: | c_1 = c_4 Cl: | 2 c_2 = 2 c_4 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 c_4 = 1 Substitute the coefficients into the chemical reaction to obtain the balanced equation: Answer: | | + ⟶ +
Structures
+ ⟶ +
Names
zinc + iron(II) chloride ⟶ iron + zinc chloride
Reaction thermodynamics
Enthalpy
| zinc | iron(II) chloride | iron | zinc chloride molecular enthalpy | 0 kJ/mol | -341.8 kJ/mol | 0 kJ/mol | -415.1 kJ/mol total enthalpy | 0 kJ/mol | -341.8 kJ/mol | 0 kJ/mol | -415.1 kJ/mol | H_initial = -341.8 kJ/mol | | H_final = -415.1 kJ/mol | ΔH_rxn^0 | -415.1 kJ/mol - -341.8 kJ/mol = -73.3 kJ/mol (exothermic) | | |
Chemical names and formulas
| zinc | iron(II) chloride | iron | zinc chloride Hill formula | Zn | Cl_2Fe | Fe | Cl_2Zn name | zinc | iron(II) chloride | iron | zinc chloride IUPAC name | zinc | dichloroiron | iron | zinc dichloride
Substance properties
| zinc | iron(II) chloride | iron | zinc chloride molar mass | 65.38 g/mol | 126.7 g/mol | 55.845 g/mol | 136.3 g/mol phase | solid (at STP) | solid (at STP) | solid (at STP) | solid (at STP) melting point | 420 °C | 677 °C | 1535 °C | 293 °C boiling point | 907 °C | | 2750 °C | density | 7.14 g/cm^3 | 3.16 g/cm^3 | 7.874 g/cm^3 | solubility in water | insoluble | | insoluble | soluble odor | odorless | | | odorless
Units
