Provides experimental data for the surface tension of aqueous solutions of SDS. Using these data, construct a plot of the surface concentration of SDS as a function of the surfactant concentration. You may assume that a molecule of SDS occupies approximately 1.4 nm2. At an SDS concentration of approximately 10 mM, the surface tension undergoes an abrupt change. Please discuss the cause for this change. Tajima et al. [130] measured the excess concentration of SDS at the air–water interface by means of radio labeling. Their results are given in Table 12.7. Are your results consistent with the experimental data in that table? Please discuss your results.