A solution of sulfuric acid weighing 200 g with a mass fraction of 9.8% reacted with aluminum.

A solution of sulfuric acid weighing 200 g with a mass fraction of 9.8% reacted with aluminum. How much hydrogen is released?

The reaction of dissolution of aluminum in sulfuric acid is described by the following chemical reaction equation:

2Al + 3H2SO4 = Al2 (SO4) 3 + 3H2;

Let’s calculate the amount of sulfuric acid available.

Its weight is 200 x 0.098 = 19.6 grams;

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

N H2SO4 = 19.6 / 98 = 0.2 mol;

When this amount of acid reacts, 0.2 mol of hydrogen will be released.

Let’s calculate its volume.

1 mole of ideal gas fills a volume of 22.4 liters under normal conditions.

V H2 = 0.2 x 22.4 = 4.48 liters;