Discussion Overview
The discussion revolves around the electrolysis of a 1.6M Barium Chloride solution, specifically addressing the unexpected black coloration of the electrolyte after the process. Participants explore potential causes for this phenomenon, including the role of graphite electrodes and the effects of barium in the electrolysis process.
Discussion Character
- Exploratory
- Technical explanation
- Debate/contested
Main Points Raised
- One participant notes that the electrolyte turned black after electrolysis, suggesting that chlorine was produced at the anode based on the smell.
- Another participant proposes that the black coloration may be due to the exfoliation of graphite electrodes under moderate to high voltages, potentially leading to a suspension of graphite in the solution.
- A participant questions whether the presence of barium makes exfoliation easier, given that similar experiments with other chlorides did not yield the same result.
- There is a suggestion to test with non-graphite electrodes to determine if the black product persists, as well as to inspect the graphite electrodes for any signs of degradation or expansion.
Areas of Agreement / Disagreement
Participants express uncertainty regarding the cause of the black coloration, with multiple hypotheses being proposed. There is no consensus on the exact mechanism or whether barium specifically influences the exfoliation of graphite.
Contextual Notes
Participants have not resolved the underlying assumptions about the electrolysis process or the specific interactions between barium chloride and graphite electrodes. The discussion remains open to further experimentation and observation.