86. Решение задачки по химии №6

3. After 30 minutes of anodizing an aluminum part at a current density of 1.2 A/dm2, an oxide film (Al2O3) 6 μm thick with a porosity of about 14% was obtained. Calculate the current efficiency during oxidation if the density of non-porous Al2O3 is 3.85 g/cm3.

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