Calculate the mass of zinc you need in hydrochloric acid to dissolve 112 liters of hydrogen.

Zinc metal reacts with hydrochloric (hydrochloric) acid to release hydrogen gas and form zinc chloride. The reaction is described by the following equation:

Zn + 2HCl = ZnCl2 + H2;

1 mole of metal reacts with 2 moles of acid. This synthesizes 1 mol of salt and 1 mol of hydrogen.

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

N H2 = 112 / 22.4 = 5 mol;

To get this amount of hydrogen, you need 5 mol of metal. Let’s calculate its weight.

M Zn = 65 grams / mol;

m Zn = 5 x 65 = 325 grams;