The equation Al + 3HCl -> AlCl3 + 3H2

  1. Detailed information about the equation Al + 3HCl -> AlCl3 + 3H2
  • This chemical equation takes place between the metal Aluminum (Al) and hydrochloric acid (HCl) to create aluminum chloride (AlCl3) and hydrogen gas (H2).
  • According to the rules of balance in chemistry, the number of moles of the reactants and products must follow the ratio of 1:3:1:3.
  1. Reaction conditions
  • The reaction between Al and HCl belongs to the type of replacement reaction, which occurs at room temperature and does not require a catalyst.
  • Hydrochloric acid must be in solution form so that the solid aluminum can come into contact and react.
  1. Reaction process
  • When Al comes into contact with HCl, each Al3+ ion will replace 3 H+ ions in the HCl molecule, forming AlCl3.
  • The remaining H+ ions will combine to form H2 gas.
  1. Phenomena that occur
  • When adding aluminum to a solution of HCl, white gas bubbles will be seen rising. This is Hydrogen gas produced from the reaction.
  • If you ignite these gas bubbles, they will burn instantly with a blue flame, proving that it is Hydrogen gas.
  • The color of the HCl solution will not change after the reaction, as the formed AlCl3 salt is colorless.

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