When zinc reacted with hydrochloric acid, 0.5 mol of hydrogen was formed. calculate the mass of the generated hydrogen.

Zinc dissolves in hydrochloric acid, the reaction is described by the following chemical equation:

Zn + 2HCl = ZnCl2 + H2;

Find the weight of 0.5 mol of hydrogen.

To this end, we multiply the amount of substance by the weight of 1 mole of hydrogen gas.

The molar weight of hydrogen is:

M H2 = 2 grams / mol;

The weight of hydrogen is:

m H2 = 2 x 0.5 = 1 gram;