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Question

What happens when aluminum reacts with hydrochloric acid?


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Solution

Reaction of metal with acid

  • When a metal reacts with an acid, a salt is formed along with the liberation of hydrogen gas.
  • When aluminum Al reacts with hydrochloric acid HCl, aluminum chloride AlCl3 is formed along with colorless hydrogen gas H2.
  • This reaction is irreversible in nature.

Chemical equation

  • The chemical equation is depicted below.
  • 2Al(s)+6HCl(aq)2AlCl3(aq)+3H2(g)

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