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Chromate and dichromate
[rquote=621001&tid=153288&author=teodor]Did you see http://www.sciencemadness.org/talk/viewt ... |
23-8-2019 at 12:08
by: TmNhRhMgBrSe |
Use camping stove to replace bunsen burner
I found use camping stove to replace bunsen burner is a good idea. It works! Also it can adjust the ... |
23-8-2019 at 09:30
by: TmNhRhMgBrSe |
Chromate and dichromate
I have some questions about chromate and dichromate.
How to know when to stop adding hydroxide and ... |
22-8-2019 at 08:47
by: TmNhRhMgBrSe |
Thiocyanate turned red
I made some new calcium nitrate solution but its slightly yellow. I added some of it to sodium thioc ... |
22-8-2019 at 04:58
by: TmNhRhMgBrSe |
Calcium and chromate
[rquote=619495&tid=152728&author=CELamCheng]I put some calcium nitrate into slightly acidifi ... |
21-8-2019 at 05:53
by: TmNhRhMgBrSe |
Calcium and chromate
I added a few drops of acid into the chromate so it should have a few % dichromate before adding exc ... |
3-8-2019 at 07:38
by: TmNhRhMgBrSe |
Calcium and chromate
[rquote=619494&tid=152728&author=walruslover69]If you don't have an understanding of basic s ... |
2-8-2019 at 08:44
by: TmNhRhMgBrSe |
Calcium and chromate
I put some calcium nitrate into slightly acidified k2cro4 to make cacro4. some precipitate formed bu ... |
2-8-2019 at 08:39
by: TmNhRhMgBrSe |
e waste precious metal refining
Sodium metabisulphite.
Go youtube, search sreetips, watch his vids. He has a bunch of gold refining ... |
2-8-2019 at 08:36
by: TmNhRhMgBrSe |
Calcium and chromate
I put calcium carbonate into k2cr2o7 to make cacro4. caco3 don't dissolve. I put na2co3 into k2cr2o7 ... |
2-8-2019 at 06:13
by: TmNhRhMgBrSe |
Sponge for chemistry?
I have some sponge from unwanted furniture, can I do chemistry with it? can I use it as heat insulat ... |
30-7-2019 at 02:02
by: TmNhRhMgBrSe |
Why is my chromate orange? Isn't it yellow?
I added more sodium hydroxide to the solution. It changed to yellow. So I think the problem solved. |
25-7-2019 at 10:44
by: TmNhRhMgBrSe |
Storing solid chemicals in plastic, wood, paper or metal box?
Some of my chemicals absorb water but some don't. Some emit smell/volatile but some don't. Some reac ... |
25-7-2019 at 06:38
by: TmNhRhMgBrSe |
Why is my zinc powder not powder???
I tried used a pliers to press the chunks. They break. Why? Shouldn't they become thinner pieces? |
24-7-2019 at 08:14
by: TmNhRhMgBrSe |
Why is my zinc powder not powder???
Pumukli, but why there are chunks? Why don't the manufacturer powderise all chunks before selling?
... |
24-7-2019 at 08:03
by: TmNhRhMgBrSe |
Why is my zinc powder not powder???
But what's the relationship between powder and oxidation, XeonTheMGPony? |
24-7-2019 at 03:51
by: TmNhRhMgBrSe |
Why is my zinc powder not powder???
I tried pressing with spatula to break them but they're reallu hard, not because stick by water. I a ... |
24-7-2019 at 03:32
by: TmNhRhMgBrSe |
Why is my zinc powder not powder???
I bought zinc powder, but most arent powder, they'er large pieces. Why??? |
24-7-2019 at 03:07
by: TmNhRhMgBrSe |
Is sulphite strong enough to reduce Cr(VI) to Cr(II)?
Then why it's blue? |
22-7-2019 at 01:47
by: TmNhRhMgBrSe |
Is sulphite strong enough to reduce Cr(VI) to Cr(II)?
I mixed some chromate, acetic acid and sulphite. The solution turned blue. So is the chromium +2? |
21-7-2019 at 10:15
by: TmNhRhMgBrSe |
Why is my chromate orange? Isn't it yellow?
I mixed sodium hydroxide and potassium dichromate. The solution is very alkaline. Why it still a lit ... |
19-7-2019 at 09:42
by: TmNhRhMgBrSe |
Removing oil residues: ethanol vs. isopropanol
Why not just use soap? |
16-7-2019 at 08:08
by: TmNhRhMgBrSe |
Will metals and chemicals in tissue paper contaminate my experiments?
How much metals and chemicals in tissue paper? If I use tissue paper to filter solutions will they c ... |
11-7-2019 at 04:18
by: TmNhRhMgBrSe |
What price should 1lb KNO3 be? Is $10 too expensive?
It's unbranded, and purity unknown, but I think it should be ok pure |
10-7-2019 at 04:05
by: TmNhRhMgBrSe |
What price should 1lb KNO3 be? Is $10 too expensive?
What price should 1lb KNO3 be? Is $10 too expensive? |
10-7-2019 at 02:29
by: TmNhRhMgBrSe |
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