Randy Holmes-Farley
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I tried to dissolve 1/2 g vanadium pentoxide in 250 mL water (half strength). I shook the daylights out of it but there were still some solids. so I added some calcium hydroxide and now I have over 1/4" of light orange fluffy sediment. No way would the amount of calcium hydroxide I added equal that volume. Also, the water is now almost clear.You're welcome.
Let us know if you hit any snags.
No way would the amount of calcium hydroxide I added equal that volume.
My orange vanadium solution cleared up just like the blue copper solution did from the linked article.
Since I don't have any sodium hydroxide, maybe I'll see if I can get 1/4 g vanadium pentoxide to dissolve in 250 mL water.
Will temperature affect solubility?
Would kalkwasser likely not be an issue assuming no solids are in it?
I decided to use sodium hydroxide after all. Can I add small amounts of dry sodium hydroxide until the vanadium pentoxide dissolves?
I'd like 1/2g vanadium pentoxide dissolved in 250mL water to be my working solution. If I only added just enough sodium hydroxide to dissolve the vanadium do you think I could store it in a glass bottle?
It turned out beautiful! A nice looking yellowish with not a hint of cloudiness.
I used the tiny scoop from a Salifert test kit, I only needed 7 scoops of lye to dissolve 1/2g vanadium pentoxide in 250 mL water.
Thanks a ton!
So my vanadium mix turned clear! No precipitate or anything. It's stored in a glass bottle with a tight fitting lid and kept at room temp in a dark cabinet. Seems super strange, I assume it still has the same potency.
Ok, probably an impurity redox reaction, but maybe someone involving the vanadium.Yes, colorless. It had a definite yellowish tint.
Is the potency still probably the same?