121. Задачка по химии №012 127

Calculate the solubility of BaSO4 crystals with sizes of 1 µm, 0.1 µm and 0.01 µm at 20 °C. Assume that the crystals are spherical with diameters equal to the indicated dimensions. The density of BaSO4 is 4.50 g/cm3, the interfacial tension of BaSO4/H2O is 500 mJ/m2, the solubility of coarse BaSO4 is 1.22*10-5 mol/l.

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