5. Using the constants of the Shishkovsky equation: a = 14.4×10^(-3) and b = 6.6, calculate the surface tension of aqueous solutions of propyl alcohol at 298 K for the following concentrations (kmol/m^(3)): 0.006 ; 0.015; 0.020; 0.050; 0.100 and construct a curve in the coordinates σ = f(C). The surface tension of water at this temperature is 71.97 x 10^(-3) N/m.

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