When zinc interacts with hydrochloric acid, hydrogen is released with a volume of 11.2.

When zinc interacts with hydrochloric acid, hydrogen is released with a volume of 11.2. The mass of the reacted zinc is equal.

A popular way to produce hydrogen is to dissolve zinc in hydrochloric acid:

Zn + 2HCl → ZnCl2 + H2;

When 1 mol of zinc is dissolved, 1 mol of hydrogen gas will be synthesized.

Let’s find the amount of hydrogen:

N H2 = 11.2 / 22.4 = 0.5 mol;

To obtain this amount of hydrogen, it is necessary to dissolve the same amount of zinc.

Let’s calculate its weight.

M Zn = 65 grams / mol;

m Zn = 65 x 0.5 = 32.5 grams;