Input interpretation
chlorine + aluminum tribromide ⟶ bromine + aluminum 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 Cl, Al and Br: Cl: | 2 c_1 = 3 c_4 Al: | c_2 = c_4 Br: | 3 c_2 = 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 = 3/2 c_2 = 1 c_3 = 3/2 c_4 = 1 Multiply by the least common denominator, 2, to eliminate fractional coefficients: c_1 = 3 c_2 = 2 c_3 = 3 c_4 = 2 Substitute the coefficients into the chemical reaction to obtain the balanced equation: Answer: | | 3 + 2 ⟶ 3 + 2
Structures
+ ⟶ +
Names
chlorine + aluminum tribromide ⟶ bromine + aluminum chloride
Reaction thermodynamics
Enthalpy
| chlorine | aluminum tribromide | bromine | aluminum chloride molecular enthalpy | 0 kJ/mol | -527.2 kJ/mol | 0 kJ/mol | -704.2 kJ/mol total enthalpy | 0 kJ/mol | -1054 kJ/mol | 0 kJ/mol | -1408 kJ/mol | H_initial = -1054 kJ/mol | | H_final = -1408 kJ/mol | ΔH_rxn^0 | -1408 kJ/mol - -1054 kJ/mol = -354 kJ/mol (exothermic) | | |
Chemical names and formulas
| chlorine | aluminum tribromide | bromine | aluminum chloride Hill formula | Cl_2 | AlBr_3 | Br_2 | AlCl_3 name | chlorine | aluminum tribromide | bromine | aluminum chloride IUPAC name | molecular chlorine | tribromoalumane | molecular bromine | trichloroalumane
Substance properties
| chlorine | aluminum tribromide | bromine | aluminum chloride molar mass | 70.9 g/mol | 266.69 g/mol | 159.81 g/mol | 133.3 g/mol phase | gas (at STP) | solid (at STP) | liquid (at STP) | solid (at STP) melting point | -101 °C | 96 °C | -7.2 °C | 190 °C boiling point | -34 °C | 265 °C | 58.8 °C | density | 0.003214 g/cm^3 (at 0 °C) | 3.205 g/cm^3 | 3.119 g/cm^3 | solubility in water | | reacts | insoluble | surface tension | | | 0.0409 N/m | dynamic viscosity | | | 9.44×10^-4 Pa s (at 25 °C) |
Units
