Abstract

The vapor pressures of ethanol-water solutions containing, separately, sodium dodecyl sulfate and sodium tetrapropylene benzene sulfonate have been measured over a wide range of detergent concentration and at temperatures between 20° and 50°C. The results show clearly that there is strong interaction between detergent and alcohol which is sufficient to overshadow the effects of detergent-water interaction so that the total vapor pressure is lowered. This is in contrast with simple strong electrolytes which raise the vapor pressure. As the concentration of either detergent or alcohol is raised or the temperature is lowered, these primary effects become less overwhelming. In the extreme case of low temperature, high alcohol concentration, and high detergent concentration, the vapor pressure begins to increase. These findings are discussed in terms of the distribution of alcohol between an aqueous and a detergent micelle phase.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.