61. Solving a chemistry problem

2. For an aqueous solution of propyl alcohol, the following values of the constants of the Shishkovsky equation were found (at 298 K). B \u003d 14.4 * 10 5 (N / m), A \u003d 6.6 (l / mol). Calculate the surface tension of a solution with a concentration of 1 kmol/m3. The surface tension of water is assumed to be σ0 = 72.53* 10-3 N/m. Assess the surface activity of the alcohol.