Kinetics and Mechanism of Oxidation of Nicotine by Permanganate Ion in Acid Perchlorate Solutions
Bibliographic record
Abstract
The kinetics of permanganate oxidation of nicotine alkaloid in aqueous perchlorate solutions at a constant ionicstrength of 1.0 mol dm-3 have been investigated spectrophotometrically. The kinetic results showed first-orderkinetics in permanganate and fractional-first-order dependence with respect to nicotine concentration. Theinfluence of hydrogen ion concentrations on the reaction rate showed inverse first-order kinetics in [H+] wherethe oxidation rates were increased with decreasing hydrogen ion concentration. A kinetic evidence for theformation of 1:1 complex has been revealed. The ionization constant of nicotine was calculated from the kineticdata and was found to be 9.69x10-4 mol dm-3 at ionic strength of 1.0 mol dm-3 and 25o C. The kinetic parametershave been evaluated and a tentative reaction mechanism consistent with the kinetic results is discussed.
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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 | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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".