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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.
0
votes
How does a group 15 oxide react with water?
Let me outline the answer previously given by eyesun:
In order to figure out how something might react with water, it is helpful to describe and categorize the starting material and to find analogies. …
- 44.2k
3
votes
reaction between Iron(ii) and Vanadium(v)
I think I realize (a part of) the answer, concerning the conditions of a redox titration of vanadium(V), for which a metavanadate, such as $\ce{NH4VO3}$ is typically used as starting material. Under a …
- 44.2k
1
vote
Formula for hypo
In chemistry, the prefixes hyper and hyper are often used to denote the number of oxygen atoms in oxoacids as compared to the normal oxoacid. The prefixes are taken from Greek.
hyper ($\upsilon\pi\e …
- 44.2k
3
votes
Accepted
Why is Cu2HgI4 filtered while it is hot?
Copper tetraiodomercurate, $\ce{Cu2HgI4}$, is typically prepared by heating combined suspensions of copper(I) iodide, $\ce{CuI}$ and mercury(II) iodide, $\ce{HgI2}$.
The iodides are prepared by (a) r …
- 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
$$w_i = \frac{m_i}{\sum\limit …
- 44.2k
2
votes
What happens when you mix AgClO4 and CaBr2?
You have already figured out the common concept:
in water salts may dissolve
if they do, they will dissociate into their ions
the ions may recombine and form insoluble products which then precipit …
- 44.2k
5
votes
Accepted
How can iron(III) sulfate be formed?
I was wondering if there was a difference between salt formation equation and production.
Absolutely! In this case, the latter means that you're trying to turn a side product (waste) of a technic …
- 44.2k
4
votes
What happens when potassium chloride, potassium dichromate and concentrated sulphuric acid r...
Have a look at the properties of the compounds involved.
Dichromate ($\ce{Cr(VI), Cr2O7^{2-}}$) is a strong oxidant and is reduced to $\ce{Cr(III)}$ if it finds a suitable partner (which then is oxid …
- 44.2k
2
votes
How to test for Chromium(III) Oxide
The test for $\ce{Cr(III)}$ can be performed in the solid state using an oxidative melt. You will need
chromium(III) oxide (obviously)
sodium carbonate
potassium nitrate
a Bunsen or Teclu burner
a m …
- 44.2k
16
votes
Why does nitric acid not turn yellow everytime?
Pure nitric acid is colourless, the brown colour is caused by dissolved nitrogen dioxide, $\ce{NO2}$.
Nitrogen dioxide is formed by the slow decomposition of nitric acid, according to $$\ce{4 HNO3 - …
- 44.2k
6
votes
Accepted
Why does Bismuth only create a +3 ion instead of a +5 ion?
Isn't it just that +5 is a lot of (positive) charge for a single cation? Which other (transition) metals do form a $\ce{M^{5+}}$ cation? Just out of my mind, I can't think of any.
Typically, these hi …
- 44.2k
5
votes
Oxygen production from thermal decomposition of metal oxides
In addition to the examples given by Jannis Andreska, metal peroxides, such as barium peroxide and lithium peroxide also release oxygen upon heating:
$$
\ce{2 BaO2 ->[\text{T = 700 °C}] 2 BaO + O2} \ …
- 44.2k
1
vote
what is the mass of chromium in this sample?
I like to solve such assignments using Python as a scientific calculator.
import scipy.constants
# number of atoms in sample
N_ATOMS_TOTAL = 2.13E+24
# atomic mass of chromium
M_CR = 51.9961 # g/m …
- 44.2k
4
votes
Why is nicotinoyl chloride available as its hydrochloride salt? How can we separate them?
Unfortunately, i don't have access to the original reference from 1928 Über die Einwirkung von Thionylchlorid auf die Pyridin-monocarbonsäuren by Meyer and Graf, but it's cited in The Preparation of N …
- 44.2k
1
vote
Accepted
Ozonide v/s Ozonoid
I've seen the term ozonoide now and then, both in German and English texts.
It was used for the the primary, as well as for the secondary ozonide. Interestingly, throughout these texts, you'll find …
- 44.2k