Commercial zinc weighing 7 g, containing 7% impurities, was dissolved in an excess of hydrochloric acid

Commercial zinc weighing 7 g, containing 7% impurities, was dissolved in an excess of hydrochloric acid. Calculate the amount of hydrogen released?

N Zn = 7 x 0.93 / 65 = 0.1 mol;

The same amount of hydrogen will be released.

Let’s calculate the volume that it occupies.

To do this, multiply the amount of substance by the volume of 1 mole of gas (assuming a volume of 22.4 liters) ..

V H2 = 0.1 x 22.4 = 2.24 liters;