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Something strange happened to my CuSO4 solution
1. Dehydrated copper sulfate can of course rehydrate in the presence of water.
2. Dissolving copper ...
13-2-2021 at 03:18
by: Maurice VD 37
Acid mixtures that dissolve gold
What do you mean by "being better to dissolve gold" ? All these mixtures will produce chlorine gas. ...
12-2-2021 at 13:49
by: Maurice VD 37
Something strange happened to my CuSO4 solution
Your precipitate may be partially dehydrated copper sulfate. I see that you have concentrated you so ...
10-2-2021 at 13:38
by: Maurice VD 37
K2CO3 / KOH from Wood ashes ?
The analysis I have reported describe the composition of the solid ashes, before any leaching or tre ...
10-2-2021 at 13:30
by: Maurice VD 37
K2CO3 / KOH from Wood ashes ?
The wood ashes have the following composition :
40 - 70 % CaCO3
5 - 10% K2CO3
5 - 10 % Na2CO3
5 ...
9-2-2021 at 13:29
by: Maurice VD 37
Any way to tell if there is bromobenzene in benzene?
Instead of TLC, I would use gas chromatography (GC)
6-2-2021 at 05:22
by: Maurice VD 37
Reaction of Ammonium Chloride and Sodium Bicarbonate
First don't write NH5CO3, as if the five H atoms were similar. No ! You should write NH4HCO3. This s ...
6-2-2021 at 03:41
by: Maurice VD 37
Low(est) boiling point salts?
Silicon tetrachloride boils at 57°C. Silicon tetra bromide boils at 153°C.
Tin tetrachloride boil ...
2-2-2021 at 13:59
by: Maurice VD 37
Copper (I) carbonate
Seems to be impossible. Copper(I) chloride is not soluble into water !!! How can you mix its solutio ...
2-2-2021 at 13:43
by: Maurice VD 37
How to calcine aluminum but not copper.
@ Pneumatician.
The verb "to calcine" comes from the latin : calcis, the chalk.
It has two meaning ...
16-1-2021 at 13:07
by: Maurice VD 37
How to calcine aluminum but not copper.
What do you mean with "to calcine Al" ? Do you want to evaporate a solution of an aluminum salt ? Do ...
13-1-2021 at 12:47
by: Maurice VD 37
Oxalate Stain Removal from Stainless Steel Question
If I summarize your observations, you started by trying to remove red iron stains from stainless ste ...
8-1-2021 at 13:24
by: Maurice VD 37
Is it normal to get low yields all the time, or am I a bad organic chemist?
I have the tendency to think that Vogel's book reports exaggerated yields. Personally I have always ...
26-12-2020 at 09:02
by: Maurice VD 37
yellow calcium hydroxide + ammonium nitrate
The yellow color is probably some iron impurity present in the chalk. CaO and Ca(OH)2 are usually ma ...
18-12-2020 at 12:58
by: Maurice VD 37
How to Separate NaOH Impurities? (NaI, Sodium Iodide)
If you heat the mixture NaI + NaIO3 at 500°C, NaIO3 will be transformed into NaI, but any amount of ...
14-12-2020 at 02:00
by: Maurice VD 37
How to Separate NaOH Impurities? (NaI, Sodium Iodide)
Try to add ammonium chloride NH4Cl. If there is NaOH in your salt, it will produce NaCl and NH3 whic ...
12-12-2020 at 04:49
by: Maurice VD 37
Gunpowder (Potassium Chlorate) from Bleach
I would be cautious about the competence of the experimenter. He says that NaOCl can be read "N H O ...
4-12-2020 at 08:28
by: Maurice VD 37
Elemental iodine from KI and bisulfate - results
The chemical equation is :

4 NaHSO4 + 4 KI --> Na2SO3 + K2SO3 + Na2SO4 + K2SO4 + 2 I2 + 2 H2O
...
3-12-2020 at 14:12
by: Maurice VD 37
Chloroform without bleach
Use bleaching powder instead of bleach. Bleaching powder is made of calcium hypochlorite Ca(ClO)2, w ...
1-12-2020 at 12:58
by: Maurice VD 37
CrPO4 and FePO4 ion exchange
So what is your question ?
1-12-2020 at 06:57
by: Maurice VD 37
How much NaOh to use to make Sodium Iodide?
With your calculation, you are losing 16.6% of the Iodine involved. because for every 5 NaI produced ...
21-11-2020 at 12:11
by: Maurice VD 37
Crystallizing out 2 Compounds from Each other - How much Solvent to use?
What would be known is how much A is soluble in a saturated solution of B, and how much B is soluble ...
21-11-2020 at 09:59
by: Maurice VD 37
perchlorate without electricity
Anyway, PbO2 cannot be turned into PbO in presence of sulfuric cid. It will quickly transformed into ...
21-11-2020 at 09:49
by: Maurice VD 37
How to Remove Sulfur Impurities?
The sulfur impurity is produced by some acid being mixed with thiosulfate, through the equation :

...
16-11-2020 at 13:09
by: Maurice VD 37
Oleum using HPO3 as a dehydrating agent
Why do you think the solution of metaphosphoric acid in sulfuric acid deserves to be called oleum ?
16-11-2020 at 13:04
by: Maurice VD 37
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