Reactions of Bromide and Iodide Ions with Silver Oxide Films on Ag Substrates
Bibliographic record
Abstract
Conversion of an Ag2O film on a Ag substrate to AgX in a halide solution occurs via three competing reaction pathways: (1) chemisorption of a halide ion, X−(aq) onto Ag2O followed by reaction to form AgX, (2) electrochemical oxidation of the Ag in the metal substrate to form AgX coupled with reduction of Ag2O to form Ag, and (3) dissolution of Ag2O followed by reaction of Ag+(aq) with X−(aq) to form AgX(aq) and deposition of the AgX. In this study, Ag2O films of different thicknesses were grown potentiostatically on Ag electrodes in 0.01 M NaOH solutions. Reactions of the Ag2O films with halide ions were initiated by transferring the electrodes into 0.01 M NaOH solutions containing I− or Br−. The reactions were followed by monitoring the open circuit potential (EOC) on the Ag electrode. The open circuit potential shows a sharp change upon completion of the reaction and this allows an easy determination of the reaction time. The reaction time as a function of halide concentration, the Ag2O film thickness, and the electrode rotation rate was measured to determine reaction kinetics parameters. Additionally, potentiodynamic and galvanostatic reduction of the AgX film was measured. The data from these different measurements were used to elucidate the contributions of the three pathways to the overall conversion process.
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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 | 0.001 |
| 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".