Determine the mass of the hydrochloric acid solution required for the reduction of hydrogen by zinc

Determine the mass of the hydrochloric acid solution required for the reduction of hydrogen by zinc with a volume of 73.92 liters.

To obtain zinc chloride, you need to take zinc and hydrochloric acid in double quantities:

Zn + 2HCl → ZnCl2 + H2;

1 hydrogen molecule is synthesized from 2 acid molecules.

Let’s calculate the molar amount of synthesized hydrogen. We divide its volume by the volume of 1 mole of gas.

N H2 = 73.92 / 22.4 = 3.3 mol;

To get this amount of hydrogen, you need to take 3.3 x 2 = 6.6 mol of hydrochloric acid.

Let’s calculate its weight.

M HCl = 1 + 35.5 = 36.5 grams / mol;

m HCl = 6.6 x 36.5 = 240.9 grams;