Hydrogen from hydrochloric acid and zinc

Preparation of hydrogen using hydrochloric acid and zinc


Preparation of Hydrogen from the reaction of Zinc with Hydrochloric Acid

by Robert W

Zn + HCl in a single displacement reaction

by sciyeung

Reaction of zinc with hydrochloric acid

by ChemToddler

Zinc In HCl (hydrochloric acid)

by Hoble

Горение водорода в мыльных пузырях

by kemiallinenkoe

Получение и горение (взрыв) водорода

by Aydar Galimov


Wears safety goggles because hydrochloric acid may spray from the flask. Please note that it is an exothermic reaction - heat will be given off by this reaction.

Always follow general safety recommendations. Please note that conducting chemistry experiments you must comply with the relevant legal procedures in your country.

Reaction formula

2HCl + Zn → ZnCl2 + H2

Step-by-step instruction

  1. Put several zinc granules or galvanized nails in a flask.
  2. Pour 30-50 ml of hydrochloric acid solution in this flask.
  3. Put a balloon over the flask opening to collect the hydrogen gas.

Scientific background

Because zinc is more active than hydrogen the zinc will be oxidized by hydrochloric acid to form zinc chloride.

Hydrogen gas will be produced during this process.


Published on 29 August 2014

  • Fire
  • Heating with fire
  • Explosion
  • Poisoned gas
  • Organic
  • Electricity
  • Solution
  • Oxidation reduction
  • Color change
  • Precipitate
  • Gassing
  • Catalyst