Abstract
The solubility of ethane, propane, and butane under standard conditions in aqueous micellar solutions of sodium dodecyl sulfate with the salt concentration from 0. 025 to 0. 3 M was studied. The methylene group increment of the Gibbs energy of solubilization in the systems hydrocarbons (C2–C4)-sodium dodecyl sulfate was calculated; its value, −3.7 kJ mol−1, is close to that in solutions with addition of 0.1 M NaCl. The thermodynamic cycle of methylene group increments of the Gibbs energies of solution of hydrocarbons in water and micellar solutions of surfactants is discussed.
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