Technical zinc weighing 650 mg, containing 20% impurities, was dissolved in an excess

Technical zinc weighing 650 mg, containing 20% impurities, was dissolved in an excess of hydrochloric acid. Calculate the amount of hydrogen released

N Zn = 0.65 x 0.8 / 65 = 0.008 mol;

The same amount of hydrogen will be released.

Let’s calculate its volume.

For this purpose, we multiply the amount of substance by the volume of 1 mole of gas (filling the space of 22.4 liters).

V H2 = 0.008 x 22.4 = 0.1792 liters;