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;
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