Question

Hi! I'm struggling with my chemistry homework, I'd appreciate all the help I can get.

When aluminum, Al, metal is dipped in an aqueous solution of hydrochloric acid, HCl, hydrogen gas, H2, is produced with the formation of an aluminum chloride, AlCl3, solution. Write the balanced chemical equation showing the phases of reactants and products.
Express your answer as a chemical equation including phases.

Answer 1

Answer:

2Al (s) + 6HCl (aq) →  3H₂(g) +  2AlCl₃(aq)

Explanation:

Chemical equation:

Al (s) + HCl (aq) →  H₂(g) +  AlCl₃(aq)

Balanced chemical equation:

2Al (s) + 6HCl (aq) →  3H₂(g) +  2AlCl₃(aq)

There are two aluminium six hydrogen and six chlorine atoms are present on both side of equation.

So given equation completely follow the law of conservation of mass.

Law of conservation of mass:

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

This law was given by french chemist  Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction