Questions tagged [iron]
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Cationic vacancies created when non-stoichiometric iron oxide is doped with silicon(IV) ions
Problem
It is believed that non-stoichiometric compound $\ce{F_{0.93}O}$ forms by doping of $\ce{Fe^3+}$ ions in $\ce{FeO}$ crystal by replacement of $\ce{Fe^2+}$. Calculate the number of cationic ...
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Can a diamond dissolve in molten iron?
The melting point of diamond is 4000C and the melting point of iron is 1538C. However, the question is if a diamond is soluble in an iron solvent. Diamond is made up of carbons. And I know steel is ...
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Why is a basic (not acidic) electrolyte frequently suggested for electrolytic de-rusting of metal or iron objects?
For home or do-it-yourself electrolytic de-rusting of steel or iron objects, the use of a soda-based electrolyte, such as "washing soda" (sodium carbonate) is almost always mentioned.
I have ...
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Is there any method to make sure a electroplated layer of iron oxidizes into magnetite (Fe3O4) instead of hematite (Fe2O3)?
I am currently electroplating iron on copper using a DIY setup in my lab. Steel sheet as anode with electrolyte having 5% acetic acid with sodium carbonate to form sodium acetate and added some NaCl ...
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Proper batch adsorption mechanism for heavy metals
I'm a college student with scope on environmental science, specifically the adsorption of heavy metals in aquatic media.
Currently, I suffered from serious issue of batch adsorption mechanism, which ...
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Why iron reacts with steam to give Fe3O4 not Fe2O3? [duplicate]
Why $\ce{Fe}$ with $\ce{H2O}$ gives $\ce{Fe3O4}$ not $\ce{Fe2O3}$?
Like, $\ce{Zn + H2O \rightarrow ZnO + H2}$, why $\ce{Fe}$ doesn't simply gives $\ce{Fe2O3}$ when it reacts with steam?
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Source(s) of extreme Raman scattering of FeOOH under intense laser excitation?
RRUFF's Raman spectrum of FeO(OH) as Goethite:
Bears no apparent similarity to the extreme Raman scattering of this sample of purported FeOOH under 785nm laser excitation with 100x objective that ...
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How can steel be so different from iron, even if amount of carbon is small?
Perhaps I am too naive, but I am having a hard time visualizing how even 'high-carbon' iron and steel alloys are maybe, at most, about four percent carbon by mass, which still means only one (smaller) ...
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Why do we have to prevent the hydrolysis of iron(III) nitrate?
I want to make particular concentration of ferric ions from $\ce{Fe(NO3)3.9H2O}$, and then I found this video
It says that we have to add nitric acid to prevent iron from hydrolysis, what does it mean?...
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Is aqua-meth-myoglobin (Fe3+) paramagnetic?
Is aqua-meth-myoglobin (Fe3+) paramagnetic? In this case, the iron has all 6 coordination positions occupied by ligands: 4 nitrogen atoms from the pyrrolic rings that compose the porphyrin, 1 ...
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Reaction between iron oxide and metallic zinc or aluminum at 500C
High temperature corrosion of iron occurs on passenger automobiles in areas such as exhaust headers, pipes and bolts that reach temperatures of about 500°C. The iron is in the form of steel or ...
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How is there still iron on earth? [closed]
Iron rusts and the earth is pretty old, so how is it that there is still iron left that has not oxidized(/rusted)?
I tried looking it up, and the amount of iron on earth is mind boggling, but is that ...
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Which is a better poison to the Haber's process, $\ce{CO}$ or $\ce{H2S}$? [closed]
I am studying about catalysts and their promoters and poisons and came across two of the possible poisons for Fe used during Haber's process and wanted to compare their effect on the rates of reaction....
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Do I need to 'neutralise' iron/steel/metal with a base after removing rust with acid?
I've never asked a question here before but these forums seem to have some extremely knowledgeable people so I thought I'd give it a try. I know it's a 1st grade question but I honestly don't have the ...
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Redox titration, complex formation effect on lg'K?
We have performed the following redox titration
(1): $\ce{MnO_4^- + 8H^+ + 5Fe^2+ <=> Mn^2+ + 4H_2O + 5Fe^3+}$
where we have used a iron(II)solution (the analyte) and titrated it with a ...
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What kind of defects can I find in a knife made of high-carbon steel with a wooden handle?
I'm still studying the Japanese knives and must now prevent the different defects that could appear in this tool. I consider a high-carbon steel blade with a wooden handle, with the size of a Sakai ...
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How to get rid of iron phosphate coating on steel after rust convertion
I tried to get rid of some mild rust on a couple of steel elements (cases, screws and whatnot). My intention was to get rid of physical rust by manually scraping it off, perhaps sandblasting and then, ...
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What other acids can replace hydrochloric acid in the production of galvanized steel?
Galvanized Steel undergoes several processes before being lowered into a molten zinc bath. One is cleaning the steel with "an acidic solution to remove mill scale."
After some more research ...
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Colour of ferrous hydroxide crystal
My chemistry teacher said that pure $\ce{Fe(OH)2}$ is a "white" crystalline solid in anaerobic environments, and acquires the usual green tinge, the colour of $\ce{Fe(II)}$, when in contact ...
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Where does the energy required to initially begin the reaction of iron and oxygen come from?
When iron is left outside, over time it reacts with oxygen to form iron oxide or rust. But how does the oxygen react with iron, isn't iron held together by strong metallic bonds? Where does this ...
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How heating of iron results in formation of new compound? [closed]
Question:
Which of the following processes results in the formation of the new compound?
A. Dissolving common salt in water
B. Heating water
C. Heating of the platinum rod
D. Heating iron rod
I'...
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Methods to detect iron in highly concentrated ferric sulphate solutions
I’m writing with a query related to reagents used to detect iron in highly concentrated ferric sulphate solutions.
I am currently exploring iron detection in both solutions of ferrous $\ce{(Fe^2+)}$ ...
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Purifying ferrous sulfate
For my wood staining experiments I have purchased 1 kilo of ferrous sulphate as a source of iron(II). It turned to be quite oxidised (yellowish) and the its solution is muddy yellow instead of green. ...
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Melting stainless steel (or high carbon steel in general) by artisanal techniques (forge welding)?
Here is a new question about the making of Japanese knives (you can find the first two here and here).
According to many sources, the best Japanese knives are made in a traditional way with forge ...
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How can warm steel and wood merge together?
I need to describe the manufacturing of japanese knives. I struggle with the step when the steel blade is put together with the wooden handle.
Here are some pictures from the video https://www.youtube....
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Why doesn’t ferrous sulfate appear orange in vinegar?
When I mix ferrous sulfate crystals with water, the solution almost immediately turns orange. However, when I mix ferrous sulfate with vinegar, it doesn’t change colors.
Why is this?
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Separation methods [closed]
I put some iron nails in water, and obviously, those started oxidizing, making those hydrogen bubbles. Some days after, the water was orange, indicated that the FeO has just dissolved in it. I found ...
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Can a plain sheet of stainless steel adhering to the 316 grade be regarded as food safe at every finish level?
My question is not purely about chemistry but it definitely involves it.
I was looking for a while to buy a food-grade stainless steel plate that would fit my home pizza gas oven (to have the dough ...
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The use of "splitting" in 17th century ironmaking?
I'm reading a book about spycraft in the 1650s. At that time Sweden was taking over the iron industry so England sent a spy to learn the new technique.
The technique is called "splitting" ...
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What is a better method when finding the iron content in spinach: Using titration or a spectrometer?
For my chemistry experiment, I want to boil spinach in water for different timings. Using the water that is left after boiling it, I was to determine the amount of iron content in the water solution. ...
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