Determine the mass of zinc that has reacted with dilute sulfuric acid if 5.6 liters of hydrogen are released.

Zinc metal is converted to zinc sulfate. The reaction is described by the following chemical reaction equation:

Zn + H2SO4 = ZnSO4 + H2;

Let’s calculate the chemical amount of hydrogen. To do this, we divide the volume of gas by the volume of 1 mole of gas (which is 22.4 liters).

N H2 = 5.6 / 22.4 = 0.25 mol;

To obtain such an amount of hydrogen, it is necessary to dissolve 0.25 mol of zinc.

Let’s find the weight of zinc. For this purpose, we multiply the amount of substance by the weight of 1 mole of metal.

m Zn = 0.25 x 65 = 16.25 grams;