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Results tagged with inorganic-chemistry
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user 418
Inorganic compounds generally do not have C-H bonds, while organic compounds do have such bonds. The distinction between inorganic and organic chemistry, however, is far from absolute.
1
vote
Chemistry of making glass
Apparently, a gas is released in the process of making glass. Can you figure out what that gas might be?
When let into an aqueous solution of a hydroxide (most likely barium), a precipitate is formed …
- 44.2k
2
votes
What happens when you mix AgClO4 and CaBr2?
You have already figured out the common concept:
in water salts may dissolve
if they do, they will dissociate into their ions
the ions may recombine and form insoluble products which then precipit …
- 44.2k
4
votes
Why are thermoluminescent materials mostly mostly based on calcium sulfate rather than on zi...
To my knowledge, pure(!) calcium sulfate does not show thermoluminescence.
It is however true that it can be turned into thermoluminescent materials by doping with rare metals, such as dysprosium or …
- 44.2k
1
vote
How to choose a UV lamp for photoisomerization of 4,4'-azobenzene dicarboxylic acid?
I'd probably try a more powerful lamp. Plain low-pressure mercury tubes have their emission maximum at 254 nm, which isn't what you want here. But these tubes also come in various coated variants with …
- 44.2k
2
votes
How to test for Chromium(III) Oxide
The test for $\ce{Cr(III)}$ can be performed in the solid state using an oxidative melt. You will need
chromium(III) oxide (obviously)
sodium carbonate
potassium nitrate
a Bunsen or Teclu burner
a m …
- 44.2k
4
votes
How can I learn Qualitative Analysis and all its equations?
As Martin has pointed out in his comment, there is no way to get around learning, but you might want to look for a system that interconnects the seemingly overwhelming amount of facts.
In German chem …
- 44.2k
3
votes
What element is/used to be called Fb?
Given that Facebookium ($\ce{Fb}$) does not exist, it is most likely a typo/transfer error for the first character of the element symbol.
The possible choices are $\ce{Rb}$, $\ce{Pb}$, $\ce{Sb}$, $\c …
- 44.2k
10
votes
Does the carbon dioxide dianion exist?
The obvious Star Wars puns aside, I have never heard about the dianion of a carbon dioxide dianion and/or that it was named carbonite.
However, the carbon dioxide radical anion, $\ce{CO2^{.-}}$, is ex …
- 44.2k
2
votes
Mass percent composition
The IUPAC Compendium of Chemical Terminology defines the mass fraction $w$ as the
mass of a constituent divided by the total mass of all constituents in the mixture
$$w_i = \frac{m_i}{\sum\limit …
- 44.2k
2
votes
What is the reaction that takes place in the cathode of a Mg-Fe electrochemical cell?
[...] I am not sure which is reduced at the cathode. Would it be the sulfate ions?
orthocresol has already pointed out in his comment that there's more in $\ce{Fe2(SO4)3}$ than just the sulfate.
…
- 44.2k
3
votes
Calcium carbonate and hydrogen peroxide reaction
The effect of aqueous hydrogen peroxide on natural limestone has been examined in a different context (removal of moss and algae from the walls of frequently visited and therefore illuminated show-cav …
- 44.2k
4
votes
What would an ammonium sulfide fire look like?
If your container is supposed to contain solid ammonium sulfide $\ce{(NH4)2S}$, it better be cooled to -20 °C or below.
(Typically, ammonium sulfide is only used in aquous solution to precipitate me …
- 44.2k
5
votes
Accepted
How to reduce Tin Oxide
The video shows the "purification" of zinc metal (probably covered with an oxide layer) by heating/reacting it with powdered carbon.
This is a very common process to reduce metal oxides to the corres …
- 44.2k
5
votes
Polyatomics -How Do They Work?
Our teacher started with $\ce{AuCl}$ and wrote down Gold (I) Chloride as the nomenclature. How did he get from $\ce{AuCl}$ to Gold (I)?
There are two possibilities: Gold (I) and Gold (III).
True, bu …
- 44.2k
3
votes
Accepted
How to prepare KF/Al2O3 i.e. potassium fluoride on alumina (/on aluminum oxide)
In Bull. Chem. Soc. Jpn., 1983, 56, 1885-1886 (PDF), the authors (Takashi Ando and coworkers) give the following method:
Alumina (30 g, neutral alumina, type 90 for column chromatography, activity …
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