The solution contains 49 g of sulfuric acid, put 6.5 g of zinc, calculate the volume of hydrogen.

In this reaction in sulfuric acid, zinc metal is converted to zinc sulfate. Zinc is a divalent metal. Therefore, during the reaction, it interacts with the same amount of sulfuric acid. The same chemical amount of zinc sulfate is synthesized. The reaction proceeds according to the following chemical equation:

Zn + H2SO4 = ZnSO4 + H2;

Let’s determine the molar amount of sulfuric acid. To do this, we divide its weight by the mass of 1 mole of the substance.

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

N H2SO4 = 49/98 = 0.5 mol;

Let’s calculate the chemical amount of metallic zinc. For this purpose, we divide its weight by the mass of 1 mole of metal.

N Zn = 6.5 / 65 = 0.1 mol;

With this amount of zinc, 0.1 mol of acid reacts. In this case, 0.1 mol of hydrogen will be obtained. Let’s calculate its volume. To do this, multiply the amount of substance by the volume of 1 mole of gas (which is 22.4 liters).

V H2 = 0.1 x 22.4 = 2.24 liters;