Questions tagged [inorganic-chemistry]

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.

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1answer
136 views

Are there computer searches for new theoretical minerals in a similar vein to Folding@Home or SETI@Home?

As a surprise gift to a friend I would like to discover a new theoretical mineral and have it named after them. I have some understanding that not all minerals have been discovered, and some minerals ...
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Complexes formed by lanthanides and actinides

A very simple test for the presence of alcohols in the lab involves adding ceric(IV) ammonium nitrate solution which gives a pinkish red colour in the presence of alcohol. When I looked up the ...
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Solubility of compounds in water

Why is $\ce{NaCl}$ more soluble in water than $\ce{NaOH}$? Well, this is a question from Chemical Equilibrium and the question hints for explanation in terms of Le Chatelier's principle.
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What is the reaction between oxalic acid and potassium permanganate?

I've already searched online some information about this equation, but everywhere I read, there's also sulfuric acid, which we did not use in the laboratory. We only used potassium permanganate and ...
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large wavelength range and list of x/y numerical data points of elements

I'm trying to get a set of FTIR or (FTIR like range) x/y numerical data points for a couple of elements, namely Silver, Platinum, Palladium, Gold and Sodium. I've looked on line and found images ...
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Identifying a quadruply charged anion containing three carbon atoms

This linear polyatomic ion containing three atoms of carbon has a negative four charge and is only found bonded with lithium and magnesium. Could anyone identify this for me? It's from a quiz bowl ...
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Does resonance apply to NO₂⁺?

My textbook said $\ce{NO2+}$ and $\ce{NO2-}$ both have resonance structures, now I am a little bit confused since I cannot figure out the resonance structure for $\ce{NO2+}$. What is it?
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How does expansion of electron shells work?

How does it work? I've read that its about the similarity of the energy levels of $3d$ and $3p$, but shouldn't the electron shell $4s$ be filled before $3d$ if filled? So what is done with the $3d$? I'...
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Sulfuric acid recovery

I know sulfuric acid is an important catalyzer and is used in various processes. My question is, how do I recover the remaining sulfuric acid? It will be impure, and I don't know how to do the "...
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Why doesn't nitrogen monoxide dimerize?

Why doesn't Nitrogen monoxide dimerize even though there is an odd electron present whereas nitrogen dioxide does (because of the odd electron on nitrogen)?
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Is there a positive radical Aurous, Au (x+)?

Is there a positive radical Aurous, $\ce{{Au}^{x+}}$? If yes what is the value of x? We have Auric as $\ce{{Au}^{3+}}$.
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Covalently bonding amide to glass

I am unfortunately not very good at chemistry, so I am having trouble figuring out where to start on this project. I need to have some way of get some amide functional groups stuck on a substrate (...
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Why can sulfur act like a catalyst?

In the reaction of combustion of gunpowder, Sulfur is used to speed up the reaction and acts like a catalyst in that it increases the rate of reaction. However, unlike a catalyst, it is used up in ...
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Where hydrogen belongs in the Periodic Table

Why do some people say that hydrogen should be above lithium in the periodic table and others argue it should be above fluorine?
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Why do metals tend to lose electrons, as opposed to maintaining electric neutrality?

Metals tend to lose electrons to obtain the stable noble gas configuration of 8 valence electrons. Why do they want to obtain this configuration, and how does the strength of their "desire" to obtain ...
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Oxidation number of nitrogen in KCN

How can one determine the oxidation number of nitrogen in $\ce{KCN}$?
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What causes Copper Rose?

We made a solution of Tetrakis Copper(I) hexafluorophosphate and the usual color is yellowish. As it oxidizes to Cu(II), it should turn blue. However, our current mixture has an off color that is ...
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1answer
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Electronic and geometric configuration of Fe(OH)₂

I'm having serious problems in the electron configuration of iron dioxide $\ce{Fe(OH)2}$ because all I could come up with was $\ce{Fe}$ double bonded with each oxygen and single bonded with each ...
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What is the reaction between Magnesium chloride and Sodium bicarbonate?

For some reason it has been very difficult to find the right answer for this question as there's so much conflicting information to be found online. Some mention a reaction where carbonic acid is made,...
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How can one find products when one knows the reagents?

I'm going to use an example (I could have used a different one); On the document it is about the study of the chemical balance of an acid-basic solution. The chemists have written the chemical ...
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What is the chemical composition of a Rubbermaid Roughneck container and is it feasible for me to make my own molds?

I'm looking for more information on the composition of a Rubbermaid Roughneck container. The description says "Roughneck containers are made with a durable polyethylene material for a lifetime of ...
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How to extract elemental bismuth from pepto bismol?

I was trying to isolate elemental bismuth from pepto bismol (bismuth subsalicylate) using the process seen here but after I added hydrochloric acid, instead of getting a pink foamy substance, I got a ...
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Is it possible to crystallize a solid ingot of metal from an (acidic) aquaous solution?

To my knowledge, metalic ions only precipitate from a solution as salts & and a process that could possibly produce monocristalline metal would be very interesting indutrially - I've never heard ...
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Do metallic bonds contain London dispersion forces?

On our chemistry exam, a question asks "Which force is present between Fe particles? a) Van der Waals b) Metallic" At first it seemed obvious that it was metallic; however, upon closer reading, it ...
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Ionic Radius of Iodine in High Temperature Form

The ionic radius of iodine in the high temperature form can be determined once the unit cell is known, but how can I calculate the radius of $\ce{I}$ given that the cubic lattice parameter is 6.10 Å.
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What is the process for purifying KOH?

I'm partnered with a jewelry production company whose plating baths require $\ce{KOH}$. We're located in Indonesia, where import fees are absurdly high, and reliable suppliers are rare. A local shop ...
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Why do sulfur and oxygen form sulfur dioxide?

Both sulfur and oxygen have 6 electrons in their outermost shell. Since both only need two electrons to stabilize, why doesn't just one atom of oxygen react with one sulfur atom, forming sulfur ...
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374 views

Classical reason for good heat conductance in diamond?

My teacher in my physics course attributed this effect to phonons, more here, but I am skeptical about this argument, it feels like he is overlooking the whole question -- what about with Silica that ...
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1answer
885 views

Are different enclosing mark types in chemical names needed to differentiate between substances?

What is the significance of enclosing marks in chemical names in determining the uniqueness of a substance (organic and inorganic)? Can a simple change in the type of enclosing mark used indicate ...
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1answer
555 views

Thiosulphate acidic decomposition

I just came across this reaction $\ce{Na2S2O3 + 2HCl -> 2NaCl + SO2 + S + H2O}$ I was wondering if it was possible to predict the products of this reaction if I didn't know it (or any inorganic ...
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1answer
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Alloy-component weight based on desired molecule

I'm a gold smith and I want to start experimenting with non-standard metal-alloys. Now high school is a long time ago for me so while I think I've got this right, I'm just not as sure as I should be ...
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Can silica gel beads cause silicosis if crushed?

Can silica gel beads (which I believe are amorphous) when crushed to dust cause silicosis?
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291 views

Source for thermodynamic and/or transport properties

I'm working on some combustion problems using Cantera and I can't find references for the thermodynamic or transport properties for many of my chemical species. I'm looking for NASA-7 or NASA-9 curve-...
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Reaction of magnesium with the surrounding air

In my lecture notes for inorganic chemistry, it is stated that magnesium has high affinity for oxygen but is rather stable at room temperature in air. Can anyone explain why this is the case?
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How dangerous is cobalt(II) chloride used in silica gel balls?

I was looking up silica gel beads on Wikipedia and noticed that some (and from experience most) are doped with a colouring agent to indicate that they have absorbed all that they can. The Wikipedia ...
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Why are antibonding molecular orbitals formed?

When two atomic orbitals make one molecular orbital there must be an antibonding orbital also. Why should they make also an antibonding molecular orbital, such as the $2\mathrm b_2$ orbital in the ...
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1answer
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Extraction of hydrogen and oxygen from water

The apparatus that I am using is a glass container, with two electrodes,two glass cylinders, water, and a battery. In the glass container will be filled with water and two electrodes kept inside the ...
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1answer
835 views

Clathrate Compounds with Quinone

I prepared a compound "$\ce{SO2}$-Quinolclathrate" by dissolving hydroquinone and sodium sulfite with hydrochloric acid in warm water. After this, I tested a little sample of the product on a flame ...
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Sodium Perborate as a detergent ingredient

Sodium Perborate is a well known bleaching agent in detergents. What makes Sodium Perborate an effective bleaching agent and how is this related to its oxidation chemistry?
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Boron-Boron bonds

I am reading up on boron in my notes and there is a certain paragraph that I do not understand The tendency of $\ce{B}$ to form $\ce{B-B}$ bonds is less pronounced than that of carbon, its ...
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Why do lithium and sodium corrode so easily? [closed]

I want to know what is the phenomenon and explanation behind this corrosion. What is the reaction?
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Will gaseous ionic compounds be free moving ions?

I knew while learning about electrolysis that if the ionic compound is molten it becomes free moving ions. If that is the case, what will happen if I continued heating till it reaches the boiling ...
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Alloys for inkless metal pen

What alloys can be used to make a metal pencil like this one?
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Tests on sodium peroxoborate

When I prepare sodium perborate by mixing sodium hydroxide with metaborate ($\ce{NaBO}$) and hydrogen peroxide and cooling it I applied a test to it by acidifying it with $\ce{HCl}$ and adding $\ce{...
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Treatment of copper (0) with sodium hydroxide

I recently made self-assembled monolayers (SAMs) of alkanethiols on a copper substrate. After scrubbing off the $\ce{Cu2O}$ top layer and rubbing the surface with ether and ethanol, I let my copper ...
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Which theta should be taken from x-ray diffraction pattern for calculating Scherrer's equation?

We use Scherrer's equation to calculate crystalline size of a particle: $$d = \frac{Bλ}{β\cos{θ}}$$ But which theta should we take from the XRD pattern for this calculation? For example, the ...
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What chemical compounds were used in CRT phosphors?

In the old days computer monitors and televisions were built from cathode ray tubes (CRTs) where the image was generated by an electron beam hitting phosphors which emitted light approximating the ...
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Separating NaClO from its aqueous form in bleach

I was wondering, can I separate the $\ce{NaClO}$ from the $\ce{H2O}$ in bleach. The decomposition point for $\ce{NaClO}$ is $374.14\ \mathrm{K}$, so I'm risking decomposing the compound if I do simple ...
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Bond order for carbonate ion for resonance

I saw in a textbook that for carbonate ion, there are 3 resonance forms and the bond order is 1 and 1/3. So in general, how should we calculate the bond order for resonance structures? Is there any ...
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Molecular orbitals of heteronuclear diatomic molecules

For drawing MO diagram for heteronuclear diatomic molecule, how do I know which is lower in energy than the other? For example, given a heteronuclear diatomic molecule $\ce{NO}$, which one is lower ...