Ternary Mutual Diffusion Coefficients and Critical Micelle Concentrations of Aqueous Sodium Dodecyl Sulfate + Lithium Dodecyl Sulfate Solutions at 25 °C
Bibliographic record
Abstract
Ternary mutual diffusion coefficients ( D ik ) are reported for aqueous sodium dodecyl sulfate (NaDS) + lithium dodecyl sulfate (LiDS) solutions at 25 °C and (0.020 or 0.040) mol·dm - 3 total surfactant. The main diffusion coefficient of each surfactant increases significantly with decreasing solute fraction, and each mole of diffusing surfactant countertransports up to 0.8 mol of the other surfactant. The results are interpreted by considering the limiting cases of diffusion in (a) solutions of NaDS micelles containing traces of LiDS with the counterion exchange equilibrium Li + + (Na q DS n ) q - n ⇌ Na + + (LiNa q - 1 DS n ) q - n and (b) solutions of LiDS micelles containing traces of NaDS with Na + + (Li q DS n ) q - n ⇌ Li + + (NaLi q - 1 DS n ) q - n . At fixed total surfactant concentration, the measured D ik coefficients are closely approximated by a simple linear interpolation of the limiting D ik values against solute fraction. Binary mutual diffusion coefficients for aqueous LiDS solutions and critical micelle concentrations for ternary aqueous NaDS + LiDS solutions are also reported.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".