24. For a preparation of finely dispersed sodium chloride, the specific surface area was determined to be 42.5 m2/g and the solubility in ethanol at 25 C was measured. It turned out that the solution was supersaturated by 6.17% compared to the solubility of coarse NaCl. Calculate the interfacial tension of NaCl/C2H5OH assuming that the drug is a monodisperse system of spherical particles.

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