2.25 describe the reactions of dilute hydrochloric and dilute sulfuric acids with magnesium, aluminium, zinc and iron

  • The following reactions are displacement reactions:
  • Metal + dilute hydrochloric acid –> metal chloride + hydrogen
  • Metal + sulfuric acid –> metal sulfide + hydrogen


  • Bubbles
  • Mg disappears
  • Reaction is exothermic (release of heat)
  • Colourless solution is formed


  • Bubbles form when heated
  • Colourless solution formed
  • Aluminum disappears


  • Bubbles of gas
  • Colourless solution formed
  • Zinc disappears


  • Pale green solution formed
  • bubbles
  • Iron disappears

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