Calculate the mass of zinc that you need to dissolve in hydrochloric acid to get 112 liters of hydrogen.
September 23, 2021 | education
| The reaction of zinc with hydrochloric acid is described by the following chemical equation:
Zn + 2HCl = ZnCl2 + H2;
To obtain 1 mole of hydrogen, you need to take 1 mole of zinc.
Let’s determine the amount of substance in 112 liters of hydrogen.
Under normal conditions, one mole of ideal gas takes up a volume of 22.4 liters.
n = 112 / 22.4 = 5 mol;
The molar mass of zinc is 65 grams / mol.
The mass of 5 mol of zinc will be:
m Zn = 65 x 5 = 325 grams;
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.