What are surface phenomena? With increasing concentration of isobutyric acid solution from 0.125 mol/l to 0.250 mol/l, its surface tension decreased from 55.1 mN/m to 47.8 mN/m, and in isovaleric acid solution from 43.2 mN/m to 35,0 mN/m. Compare the adsorption values of the substances in the given concentration range at T = 293K
