Question

Translate the following statements into chemical equations and balance them. Barium chloride reacts with aluminum sulfate to give Aluminum chloride and a precipitate of barium sulfate.

Answer 1

Balanced chemical equation

• Chemical reactions, in which reactants combine to form products, are represented by chemical equations.
• Stoichiometric coefficients are added to the reactants and products to balance chemical equations.
• It's significant because the principles of mass conservation and constant proportions require a chemical equation to be applied.
• When the law of conservation of mass is applied to a chemical, neither an atom is generated nor destroyed on either side of the reaction, resulting in an equal number of elements in both the reactant and the product.

Chemical reaction

• Aluminum chloride $\left({\mathrm{AlCl}}_3\right)$ and a barium sulfate $\left({\mathrm{BaSO}}_4\right)$ precipitate are produced when barium chloride $\left({\mathrm{BaCl}}_2\right)$ reacts with aluminum sulfate $\left({\mathrm{Al}}_2{\left({\mathrm{SO}}_4\right)}_3\right)$.
• The chemical equation is as follows:

${\mathrm{BaCl}}_2+{\mathrm{Al}}_2{\left({\mathrm{SO}}_4\right)}_3\to {\mathrm{BaSO}}_4+{\mathrm{AlCl}}_3$

Balancing the chemical equation

• Number of Chorine $\left(\mathrm{Cl}\right)$ atom is $2$ on reactant side but the $\mathrm{Cl}$ atom is $3$ on product side.
• Add $3$ before barium chloride on the reactant side and $2$ before Aluminum chloride on product side.
• The Barium $\left(\mathrm{Ba}\right)$ atom in the molecule is not equal, add $3$ before ${\mathrm{BaSO}}_4$ on product side.
• The balanced equation is as follows:

$3{\mathrm{BaCl}}_2+{\mathrm{Al}}_2{\left({\mathrm{SO}}_4\right)}_3\to 3{\mathrm{BaSO}}_4+2{\mathrm{AlCl}}_3$