94. Solving a chemistry problem
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Product description
- Plot the Gibbs adsorption isotherm using the surface tension values of aqueous solutions of sodium dodecyl sulfate (surfactant) at a temperature of 20 °C:
surfactant, mol/l 2.16 3.96 6.6 8.3 9.3 9.8 10.2 11.2
σl-g, mN/m 62 54 47 43 42 41 41 41
Determine the surface activity of this surfactant. The surface tension of water is 72.75 mN/m.
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