10 grams of a mixture of aluminum and copper was treated with concentrated nitric acid. The volume of the evolved gas was 2.24 dm3. What is the mass fraction of aluminum in the initial mixture.
Copper reacts with concentrated nitric acid.
A film of aluminum oxide forms on the surface of aluminum, which does not allow contact with the environment.
Calculations are carried out according to the equation for the reaction of copper with acid.
In this equation by the ratio, you will see that the amount of copper substance is 0.05 mol.
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