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Romix
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After incineration crystals are growing in a form of cubes, NaCl like, but not sodium chloride, because they are slightly hygroscopic, after filtering
out the concentrate filter paper used not drying out almost a month now, and a pinch of this salt that fall out first on slow evaporation on a lamp
melted standing on air.
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Romix
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Ok! Crystals not seem like growing and going back in to solution, adding nitric to it soon, checking for Potassium presence. Incinerated water
soluble plant ash.
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Romix
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I placed concentrated solution of it on my LED lamp when I wrote my last comment.
Some crystals formed since, here's a photo for you Dear forum members to see a shape change of a crystal after incineration before I add acid to it,
luckily I have couple of pipettes left from good old days when concentrated nitric used to sell on eBay to any one wanting.
[Edited on 5-12-2023 by Romix]
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Romix
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Acid still colorless after so many years, salt on a picture above was fizzing when I've dripped 6 pipettes of concentrated nitric in it, first I've
tried adding a little drop, reaction wasn't vigorous, so I've added the whole lot in, reaction took place in a beaker with tall walls 500ml, bubbles
not gone any higher then 150ml. Gas produced is scentless, probably CO2. Before today I usually diluting acids by 3 times with water, to prevent run
away out of a test tube. Will evaporate solution on a lamp till about noon UK, give my plants some CO2 and then it is freezers time, to see if
Potassium Nitrate will crystalize out of it on cooling to 0C, I'm familiar with it's crystals.
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Romix
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Ok, I backed up Potassium's presence in water soluble plant ash with another experiment, not just violet flame coming out of the crucible. Placed
solution after addition of HNO3 to it in a freezer about two hours ago, took it out now, lots of Potassium Nitrate crystals crystalized out.
[Edited on 6-12-2023 by Romix]
 
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Romix
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Please direct me how to analyse correctly Hydroxides precipitated out of insoluble in water plant ash dissolved in vinegar.
[Edited on 6-12-2023 by Romix]
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Romix
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Posts: 427
Registered: 19-6-2015
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Romix
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Registered: 19-6-2015
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I think I've crystalized all KNO3 out of solution, on further evaporation them hygroscopic cubic like crystals appeared again.
Here's recrystallized KNO3, I'm not expected that much out of 6 pipettes.
[Edited on 18-1-2024 by Romix]
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