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Author: Subject: mercury (I) chromate + photos
vano
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[*] posted on 23-12-2020 at 09:01
mercury (I) chromate + photos


mercury (I) chromate. It is a red powder. It doesn't dissolve in water. I made it from sodium chromate and mercury(I) nitrate dihydrate.

received_212815013668594.jpeg - 300kB
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vano
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[*] posted on 23-12-2020 at 09:04


More photos and reagents which i used.

[Edited on 23-12-2020 by vano.kavt]

received_127219422458763.jpeg - 162kBreceived_200282425134544.jpeg - 189kBreceived_231589411809550.jpeg - 183kB
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Bedlasky
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[*] posted on 23-12-2020 at 22:25


Nice! When I was at high school, I learned about classical qualitative inorganic analysis (and also did some lab practice). But I never worked with Hg(I) salts and I always want to see some Hg(I) compounds. I have small amount of elementar Hg, maybe I'll try make this compound.



If you are interested in aqueous inorganic chemistry look at https://colourchem.wordpress.com/main-page/

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Metacelsus
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[*] posted on 24-12-2020 at 12:36


How stable is this? Will chromate eventually oxidize the Hg(I) to Hg(II)?



As below, so above.
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vano
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[*] posted on 24-12-2020 at 22:33


Quote: Originally posted by Metacelsus  
How stable is this? Will chromate eventually oxidize the Hg(I) to Hg(II)?


It is stable. Heat to 400 degrees Celsius as follows:
4Hg2CrO4 → 2HgCrO4 + 6HgO +O2
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[*] posted on 24-12-2020 at 23:00


Holy sh*t, mercury AND chromate all in one? That's a toxicity double whammy!



my youtube channel, organic chemistry videos: https://www.youtube.com/channel/UC0qzaRyHxLUOExwagKStYHw
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[*] posted on 24-12-2020 at 23:25


Quote: Originally posted by Cou  
Holy sh*t, mercury AND chromate all in one? That's a toxicity double whammy!


Not so poisonous, because it is insoluble, the main thing is not to inhale the powder and because it is a heavy compound the powder does not stay in the air for long.

[Edited on 25-12-2020 by vano.kavt]
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