What mass of hydrogen will be released when zinc interacts with a solution containing 39.2 grams of sulfuric acid?

Zinc metal reacts with sulfuric acid to release hydrogen gas and form zinc sulfate. The reaction is described by the following equation:

Zn + H2SO4 = ZnSO4 + H2;

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

Let’s calculate the amount of sulfuric acid.

M H2SO4 = 2 + 32 + 16 x 4 = 98 grams / mol;

N H2SO4 = 39.2 / 98 = 0.4 mol;

During the reaction, 0.4 mol of hydrogen will be synthesized. Let’s calculate its volume.

To do this, multiply the amount of substance by the volume of 1 mole of gas.

V H2 = 0.4 x 22.4 = 8.96 liters;

M H2 = 2 grams / mol; m H2 = 2 x 0.4 = 0.8 grams;