Questions tagged [oxides]
The oxides tag has no usage guidance.
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How to interpret the geometry of NO2 using VSEPR and orbital hybridization? [duplicate]
I was given to study the structure of $\ce{NO2}$ using VSEPR theory, even if the presence of a single electron is better explained by MO theory. Using the standard form $\ce{AX_nE_m}$, where $\ce{A}$ ...
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What is the most efficient way to produce a lot of copper oxide with electrolysis?
I started this experiment with some old copper CPU heatsinks bineded together and put them in a 1000ml beaker with a NaOH solution.
After roughly 10 hours running at 4V and 5A I ended up with a ...
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Bond lengths of M-CH2 vs M-O
Are there any known (ionic) solid structures with an anion site occupied by either $\ce{O^2-}$ or $\ce{(CH2)^2-}$ ?
If the answer is "yes", I'd like to know which anion forms shorter bond to ...
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How to Determine the State of Matter of a Molecule
While many videos and even answers exist on this site about finding whether a compound is soluble in water to determine if its state symbol should be "(aq)." However, across the internet I ...
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NO vs NO2 boiling point
Why does $\ce{NO2}$ have a higher boiling point than $\ce{NO}$? They are both polar molecules, but I don't understand what makes them different in b.p. Is it because of the double bond that $\ce{NO2}$ ...
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Could the presence of multiple stabilizer oxides induce sluggish diffusion in a stabilized zirconia to increase lifetime?
The presence of yttria stabilizes zirconia's high temperature allotropes, but it also decreases the lifetime due to more defects that can induce more diffusion into yttria rich and poor regions, ...
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Would fluorides stabilize zirconia?
The reason for zirconia's cubic and tetragonal phases not being stable is that the cation-anion ratio is too small for proper contact between ions.
One way is to use other oxides that have a bigger ...
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Alkali-rich lead glass with working range at room temperature
I understand that the glass transition temperature (above which it is considered a super-cooled liquid) is quite far below the liquidus of the corresponding crystalline mixture. In the paper, "...
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Amphoteric character of V2O5
In my NCERT textbook, in the chapter 'The d- and f-block elements', the last paragraph under oxides and oxoanions of metals goes like this:
$(...)$ $\ce{V2O5}$ is, however, amphoteric though mainly ...
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Why mono and dioxides of germanium,tin and lead are amphoteric
I get that group 14 elements show +4 and +2 oxidation states so they can form both ionic and covalent compounds and so they are amphoteric but monoxide means that these elements have to show +2 ...
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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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What chemical species is really acting as oxidizer in hot concentrated sulfuric acid [duplicate]
In some japanese website it is written that hot conc sulfuric acid has greater oxidation power than that of normal temperature since it contains sulfur trioxide formed by decomposition of the sulfuric ...
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Can a colorant be mixed into zirconia powder?
I’m wanting to color zirconium dioxide into beads after it is fired but I would like to get more colors than just white and the high temperature black oxide. Can I mix other metal oxides to zirconium ...
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Bond order of carbon monoxide and nitrosyl cation
The following question was asked in JEE Mains exam in 2022, a competitive exam for engineering in India.
The difference between bond order of CO and NO$^+$ is $\frac{x}{2}$ where $x$ = ____. (Round ...
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Besides diamonds, are there any stones without oxygen in composition? [closed]
In my inpression, the most of stones are oxides and hydroxides, correct me if I am wrong.
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Does this reaction that make an Alum happen?
One day I asked a question in high school.
The problem is “Show the reaction that occurs when potassium permanganate is added to dilute sulfuric ferrous sulfateⅡ.
The answer is $\ce{2KMnO4 + 8H2SO4 + ...
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Is it necessary criteria that we draw Ellingham diagram for only one mole of oxygen consumed for a given reaction
In my textbook and many other reference text shows Ellingham diagram for only one mole oxygen consumed. Why is this done?
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what are other metal oxide that can be used as electron acceptors?
I am using silver oxide as a cathode because it's common. I was reading that " some solid metal oxides (e.g., silver oxide, lead dioxide, and manganese dioxide) possess high redox potentials. ...
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Determine if particles are aluminium oxide
I am getting a white dust in my car, coming from the air vents and landing all over, mostly on the dashboard. After searching about this, it seems that it could be caused by the fins of the air ...
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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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At what temperature does Brass blacken in air?
A machine has overheated in an air filled enclosure, and a major brass component of mass around 1kg turned black. It was probably not in the high temperature regime for more than 2 hours at a guess ...
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Could a beach have green or blue sand due to a nearby copper deposit? How poisonous would such a beach be? [closed]
I am in the midst of a world building project and am wondering about green sand from copper oxide/patina material. The material could either be washed into the water from a nearby land deposit or be ...
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Air purifier: What is the reaction mechanism between HCHO and negative oxygen ion
Multiple government and commercial sources claim that the negative oxygen ion generated by air purifier can reduce HCHO concentration.
However, on google scholar, I find neither the reaction formula ...
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The difference between Zn and Al on acid and base reaction
Because it was written on my textbook that Zn and Al dissolves in acid and alkali, I tried.
When I put Al in NaOH solution it reacted immediately. But when I put Zn in the same concentration of NaOH ...
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Is it appropriate to call an element an amphoteric substance?
In most of Japanese high-school textbook it is written that Al,Zn,Sn and Pb are amphoteric element(in Japanese 両性元素）because they react both with strong acid and base.
For example Al reacts like below.
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Does chromium(III) oxide react with or dissolve in liquid sulfur dioxide?
Liquid $\ce{SO2}$ (b.p. −10 °C) is known as a versatile solvent (yet not particularly pleasant to work with) for a wide range of organic and inorganic compounds having limited solubility in ...
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Can uranium be used to color aluminium oxide based gemstones, and/or diamonds?
Re-hosting this question from Physics to Chemistry, lightly edited.
Rubies and sapphires are chemically equivalent to the mineral corundum, with the exception of transition metal impurities that ...
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Is sodium superoxide more abundant than sodium oxide?
Reference(NCERT book of India);
My professor has taught me that $\ce{Na2O}$ and $\ce{Na2O2}$ are the most common oxides of sodium, but in my reference book it is written that they are $\ce{NaO2}$ and ...
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How can one change the color of Iron Oxide by changing the composition or hydration?
How does the color of rust change depending on its makeup and state, or more to the point, how would one put the rust into that state?
For example, Wikipedia shows Iron(III) Oxide as being red in the ...
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What role does ammonium play in the explosion of ammonium nitrate? [duplicate]
I read that ammonium is the "fuel" and nitrate is the "oxidizer". The nitrate oxidizes because it's a nitro group, but what's the mechanism of the ammonium?
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Metal oxide formation minimum temperature?
Is there such thing as minimum temperature for creation of metal oxide?
Let's say a highly reactive metal, lithium, comes into contact with solid oxygen at a cryogenic temperature of 20 Kelvin, would ...
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What can be used instead of magnesium to make silicon from sand (in lab)? [closed]
I found this post talking about making silicon from sand. They mixed magnesium with sand and then burn them then it create silicon and magnesium oxide. And my question is what can we use instead of ...
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Why do many p-block dioxide gases dissolve in water to form acids?
I find that many gases of the form $\ce{MO_2}$ like $\ce{SO2}$ , $\ce{CO2}$ and $\ce{NO2}$ dissolve in water to form acids. This observation has many different practical implications, for example, it ...
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How can I make cerium(IV) chloride? [closed]
How can I make CeCl4?
I have some ideas but am worried I'm going to mess it up since this is the first time I've worked with lanthanides.
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Can nitric oxide (NO) reduce xenon fluorides
I came across the following question:
$\ce{XeF4}$ on reaction with gaseous nitric oxide forms xenon gas and (P). Find the total number of lone pairs present in one molecule of P.
As far as xenon ...
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What is the effect of H2O2 on SPIONs?
I have a system contains super paramagnetic iron oxide nanoparticles (SPIONs) either Fe3+ or Fe2+. I need to introduce hydrogen peroxide to the system but i am not sure about its effect to the SPIONs ...
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What is/was "uraneous oxide"? Was it an accepted name for a compound or mixed oxides of uranium?
In This National Technical Reports Library page for a 1965 report Method for Coating Actinide Particles in the list of keywords both Uranium compounds and Uraneous oxide are listed.
But I don't find ...
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Why does radium form a nitride rather than oxide when exposed to air?
The Wikipedia article states:
Pure radium is silvery-white, but it readily reacts with nitrogen (rather than oxygen) on exposure to air, forming a black surface layer of radium nitride ($\ce{Ra3N2}$)....
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Oxidising power of oxides of 15th group elements [closed]
In case of oxides of 15th group elements in form of $\ce{M2O3}$ ($\ce{M}$ is the 15th group element), does oxidising power of oxides increase or decrease down the group?
I tried to check by comparing ...
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How thick is the colored oxide layer on heat treated stainless steel? [closed]
When stainless steel is welded, or just heat treated, it will develop a thicker oxide layer, which in some cases is is rainbow colored, but can become so thick as to appear almost black. From the ...
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Explanation of rusting of iron through metallic bonding [closed]
In the diagram , colour representations :
[O - oxygen atoms , red dots - electron ]
I will explain rusting of iron due to metallic bonding as I have understood from online. Please correct me if I’m ...
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Why do only some metals make protective oxide layers?
Almost all Alkali metals and Alkaline Earth metals react with air to form their respective oxides, but why does only Magnesium forms a protective oxide layer? What properties of magnesium oxide allow ...
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Comparison between bond length of platinum and titanium oxides
This question comes from a problem sheet I recently had.
It concerns the fact that Pt-O bond lengths are typically longer than Ti-O ones, even though the radii of the two metals are similar.
My ...
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Ascorbic acid and aldehydes: Reaction and Influencing Metals
I've researched online and I've read that ascorbic acid can both promote oxidation and reduction depending on the conditions (I've read about trace metals but I've never found which metals affect its ...
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MgO as food supplement - solubility in water
A number of magnesium food / sports supplements contain it as MgO - which is practically unsoluble in water. The recommended quantity is somewhere around .3g / day, so not an insignificant amount.
How ...
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Do antimicrobial abilities of copper boilers decrease over time?
As copper boilers age and develop oxide buildup, does this lessen the copper's antimicrobial abilities in killing bacteria? I was thinking since that coating would be on the copper, there would be ...
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Is the lattice point in ZnO crystal structure occupied by the molecule ZnO or the ion O^2-/Zn^2+?
I learnt that ZnO has a hexagonal crystal system. I was expecting that cations or anions would occupy the lattice points in hcp while voids would be occupied by anions or cations respectively. But ...
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When MnO2 acts as a catalyst to speed up the decomposition of H2O2 what does it actually do? [duplicate]
Everywhere I look it just states that $\ce{MnO2}$ acts as a catalyst but I have yet to find a simple explanation for what it actually does. What is the mechanism involved in simple terms?
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What does *oxidizing* have to do with *hydrogen*? [closed]
An oxidizing acid is a Brønsted acid that is a strong oxidizing
agent. All Brønsted acids can act as oxidizing agents, because the
acidic proton can be reduced to hydrogen gas.
(source: Wikipedia)
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Molecular structure of iodine nonoxide
A question in an exam was as follows:
Iodine reacts with ozone gas to form a dark yellow solid $\ce{X}.$ Let the number of lone pair of electrons in un-ionised form of $\ce{X}$ be $m,$ number of lone ...
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