[HN Gopher] How to grow green potassium ferrioxalate crystals fr... ___________________________________________________________________ How to grow green potassium ferrioxalate crystals from iron rust Author : crystalchase21 Score : 62 points Date : 2022-01-03 12:05 UTC (1 days ago) (HTM) web link (crystalverse.com) (TXT) w3m dump (crystalverse.com) | at_a_remove wrote: | I have so many questions. | | How hard are they? Are they fragile? | | Many of them suffer from desiccation and I wonder if they can be | "sealed" in some manner. Or if the UV-sensitive crystals can be | protected by some kind of coating. | | It would also be interesting to see what would happen using the | crystals grown in one solution as seeds in a chemically different | solution. The right sequence might not be reactive, but you could | layer them ... | HarryHirsch wrote: | _It would also be interesting to see what would happen using | the crystals grown in one solution as seeds in a chemically | different solution. The right sequence might not be reactive, | but you could layer them ..._ | | Ooh, epitaxial growth! Could try that with a series of alums - | Al(iii), Cr(iii) and Fe(iii) is all readily available. | Zenst wrote: | >To carry out electrolysis, I first prepared salt solution as the | electrolyte. Then, I used a piece of iron as the positive | electrode and a steel wire as the negative electrode. | | Wouldn't you risk producing chlorine gas due to the salt in the | solution? | HarryHirsch wrote: | You are oxidizing the iron instead of the chloride ion. The | great reactivity of chlorine gas indicates that it requires | much energy to prepare. | pavel_lishin wrote: | Rad! He also shows how to grow beautiful crystals that are safe | to work on with your kids: https://crystalverse.com/grow-alum- | crystals-at-home/ | dbsmith83 wrote: | Have you ever tried suspending the more toxic crystals in epoxy | resin so they would be safe to handle? | sophacles wrote: | Im so sick of the crystal hype squad trying to get us to rewrite | our rust. | ycIsGarbage wrote: | V__ wrote: | I (genuinely) wonder, how often have you paid authors for their | articles/blog posts? | ycIsGarbage wrote: | Often enough that I'm not just making shit up here. | Cerium wrote: | Not the poster, but I have a Patreon account full of my | favorite bloggers and YouTubers. | londons_explore wrote: | I run a website of guides, and have a paypal donate button, | and I think about 1 in 10,000 visitors donate. Donations are | mostly $1 or so, but I got a $1000 one once. | | Overall, a substantially lower return than ads. | Levitz wrote: | >Green potassium ferrioxalate solution exposed to light will turn | yellow, and then brown, releasing carbon dioxide in the process. | After keeping them in the dark for some time, they become green | again. Adding small amounts of oxalic acid greatly helps to speed | up the process. | | I understand why they would turn yellow, but how can they turn | back to green when keeping them in the dark? They absorb carbon | dioxide passively somehow? ___________________________________________________________________ (page generated 2022-01-04 23:00 UTC)