When zinc reacted with hydrochloric acid, 16 hydrogen molecules were formed.
| July 22, 2021 | education
When zinc reacted with hydrochloric acid, 16 hydrogen molecules were formed. How many molecules of hydrochloric acid have reacted?
Zinc dissolves in hydrochloric acid, the reaction proceeds according to the following chemical equation:
Zn + 2HCl = ZnCl2 + H2;
There are 2 atoms of elemental hydrogen in a hydrogen molecule.
In a molecule of hydrogen chloride there is 1 atom of elemental hydrogen.
Therefore, in order to obtain 16 molecules of elemental hydrogen, it is necessary for 16 x 2 = 32 molecules of hydrogen chloride to react.
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