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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How to determine the chemical formula using multiplicity factor and Wyckoff letter?

I am looking for an explanation on how to read occupation of atoms to determine the possible compound. Both the Multiplicity factor and the Wyckoff letter.
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What is the @ symbol used for in material science?

I came across the phrase "Silicone Rubber/Paraffin@Silicon Dioxide" also written as $\ce{SR/pa@SiO2}$, utilising the @ symbol. How can I understand what this means?...
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Why is ice cubical in structure at very low temperature?

My book says that at atmospheric pressure ice crystallises in the hexagonal form but at very low temperatures it condenses to cubic form. Why and how does this happen?
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Software that finds the minimum energy inorganic molecules given set of elements in molar ratios?

Does there exist software that searches a database of known1 inorganic2 molecular enthalpies, and attempts3 to list the lowest energy inorganic molecule combinations constrained to a set of elements ...
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Make tin nitrate? [closed]

How can tin nitrate be synthesized? Mixing nitric acid and tin makes tin oxide (I did this in chemistry class) so how can tin nitrate be created?
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Infrared spectroscopy [closed]

I am trying to interprete my FTIR data which is in ASCII format. I downloaded eFTIR software for the analysis and discovered that I have to convert the ascii to .spc file. How do I do that.
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Why chlorine acts as a strong field ligand in tetrachloridoplatinate(II)?

In most of the cases I have learnted, halogens act as a weak field ligand. However, I recently learned somewhere on the web that the strength of a ligand also depends upon the size of the atom. A ...
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What is the oxidation state of Boron in Ammonia Borane? [closed]

So I was searching about the difference between redox reactions and Lewis Acid-Base reactions and came across classical example of latter, $$\ce{NH3 + BH3 \rightarrow NH3BH3}$$ Now in this example ...
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Why does Xenon Hexafluoride exist as [XeF5+][F-] and not [XeF5+][XeF2-] in the solid state [closed]

I already referred to this similar question but it yielded no explanation for the reason. Cations and anions of similar sizes stabilize each other through lattice energy effects in the solid state. ...
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What is the Electronic Configuration of Iron [closed]

Before you give me a complicated answer, keep in mind I would like it in the format of the following: Beryllium - 1st shell : 2, 2nd shell : 2 Please don't give me stuff like this : $\ce{1s^2 2s^2 2p^...
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Do metals react with ammonia gas (not liquid phase)?

In my chemistry notes I have two chemical equations as follows: $$ \begin{align} \ce{2 NH3(g) + 6 Li(s) &-> 2 Li3N(s) + 3 H2(g)}\tag{R1} \\ \ce{2 NH3(g) + 2 Na(s) &-> 2 NaNH2 + H2(g)}\...
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Is tin and tinware toxic?

I tried to find info on tin toxicity but there is not much. Wikipedia here says that it is not very poisonous; but there could be cases. My question is: is it dangerous to say have a coffee boiled ...
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Why is the pH level of carbonation loss decreasing then increases afterwards?

We have done an experiment of the titration of unsealed sprite soda to find the amount of carbonic acid being loss on various duration (0 to 1 hour), due to decrease pressure. The calculation was to ...
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Reorganization during ionisation for d block elements

This is a quote from my textbook: The irregular trend in the first ionisation enthalpy of 3d lmetals,can be accounted for by considering that the removal of one electron alters the relative ...
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Compound with highest lattice energy

Which ionic compound has highest lattice energy among all ionic componds both (per mole and per gram). I could find Al2O3 with 15916 kj/mol https://calculla.com/lattice_energy_table.
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Reaction between nitric acid and Mg [duplicate]

In my book it is written that whenever any metal react with nitric acid the evolved hydrogen is oxidized and water is formed except Mg and Mn . Please someone explain why this is so, why hydrogen is ...
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What is the IUPAC name of [Cr(H2O)5Cl]Cl2.H2O

What is the IUPAC name of $\ce{[Cr(H2O)5Cl]Cl2.H2O}$? The net says that the correct name is Pentaaquachloridochromium(III) chloride. But do we not have to account for the water molecule present ...
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What is the name of the compound Sc(HCO2)3?

I would like to know what the name of the compound $\ce{Sc(HCO2)3}$ is. I've been told that it is not scandium hydrogen carbonite and that it is not scandium formate. Any hints or suggestions about ...
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Why is H2Te the strongest acid among the following?

Among H2S, H2Se, H2Te the strongest acid is H2Te. The reason being that the bond strength in it the weakest so it dissociates easily. But my question is that why does it looses H+ in first place ...
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Only valence shell electrons participate in bonding then how is Cr in H2CrO4 forming 6 covalent bonds although it has only 1 valence electron?

The structure of $\ce{H2CrO4}$ is as follows: Shell configuration of chromium is 2,8,13,1 i.e. it has only 1 valence electron and only valence electron participate in bonding but Chromium in the ...
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Do metals form covalent bonds besides ionic and cordinate bond? [closed]

My chemistry textbook says that metals form ionic or cordinate bonds whereas non metals form covalent bonds. But in another textbook I read that Lithium, Beryllium, Aluminium, Chromium, Manganese etc, ...
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How to count electrons for a bridging alkylidene ligand

How many valence electrons does this complex have? How do you count electrons for a bridging alkylidene ligand?
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if we a have a molecule can we calculate its energy as a whole with it bonds electrons and protons and neutrons and to how match accuracy [closed]

sry i well explain better and simplify if we a have a molecule can we calculate its energy as a whole with it bonds electrons and protons and neutrons and to how match accuracy
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What does (sol) in a chemical equation mean?

I'm reading Shrivers Inorganic Chemistry book and some of the equations have a (sol) state on them. I'm sure the book has already defined this but I cannot find where. Examples: \begin{align} \ce{[...
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Period of palladium [closed]

The configuration of palladium is 2,8,18,18. Then what is it doing in the 5th period? Is there an explanation without the concept of subshells?
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which kind of common stainless steel grade is corrosion resistant for evaporating water from ammonium chloride solution [closed]

I want to know would 316L and 317L grade stainless steel resist corrosion for evaporating water from ammonium chloride solution
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Why is it not practical for insoluble salts to be prepared from other insoluble salts? [closed]

My textbook says that it is not practically feasible to make insoluble salts (say PbSO4) from other insoluble salts (say PbO), without explicitly mentioning the reason for the same. My guess is: if ...
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Radius of atoms

I know that by definition when talking about the radius of an atom in a crystalline structure the radius is the half of the distance between the centers of the adjacent atoms . And I read about ...
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Why oxides with the element in higher oxidation state are more acidic

We see this trend of acidic-basic property of oxides in most cases: $\ce{Mn2O7}$ is acidic, $\ce{MnO}$ is basic, the intermediate oxides are progressively less acidic and more basic, as the oxidation ...
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Oxidation states the elements in nitrosyl chloride

I have read that $\ce{NOCl}$ dissociates to $\ce{NO+}$ and $\ce{Cl-},$ and the various reasons stated as such seem fine. But what I don't get is this: if we follow the actual rules of assigning ...
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Fractional index in a chemical formula of metal oxide

I have just read an article in which they used $\ce{WO3}$ and $\ce{WO_{2.9}}$ as precursors, whose objective was to form $\ce{WS2}$, in an atmosphere of argon by CVD. In one boat there is the powder ...
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Characterization of amorphous compounds [closed]

I need to characterise my dried precipitate, dried at temperatures between 100-120 deg cel, for various samples. I use Match! software by crystal impact to analyse XRD raw files. The problem is that, ...
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How can the rate of reaction between thiosulfate ion and acid be calculated as v = 1 M/Δt? [closed]

The experiment is done in the following way: Sodium thiosulfate is added in a beaker (the concentration is noted). Acid is added (the same amount each time). Time is taken till the reaction reaches ...
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Strength of OH bond

This question might seem a little general, but how can we know the strength of the OH bond of third period element hydroxides? Does it increase across the period or does it decrease?But more ...
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2answers
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Can I determine the rate law order from stoichiometric coefficients?

I've read in two books, and seen in three separate videos courses, that you cannot determine the rate law order from stoichiometric coefficients. Then, I have seen homework and "practice" problems ...
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What is the activation energy of a Daniell cell?

I'm having trouble finding a posted literature value for the activation energy for the Daniell cell redox reaction: $$\ce{Cu^2+ + Zn -> Cu + Zn^2+}$$ Where might I be able to find this ...
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210 views

Why does copper have a high enthalpy of atomisation when it has a half filled d sub shell? [closed]

If I understood correct, the high energy of atomisation for d-block element comes from the ability to make many metallic bonds due to half electron filled d-orbitals, but it seems here that copper has ...
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Why Zn has highest ionisation enthalpy in 3d series?

Zn which has the highest ionisation enthalpy in 3d series.The reason given in my textbook is: The value of zinc is higher because it represent ionisation from 4s level. This is not correct because ...
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are there any stable four membered chelate rings?

With reference to coordination compounds, most chelate rings formed with the metal atom and ligands are 5-member rings (including the central metal atom), such as complexes with Oxalate, ...
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Calculating pH of rain water

The concentration of $\ce{SO2}$ in the atmosphere over a city on a certain day is $\pu{10 ppm}$. Given that solubility of $\ce{SO2}$ in water is $\pu{1.3653 mol L-1}$ and $\mathrm{p}K_\mathrm{a}$ of $\...
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Determining sulfate content in Mohr's salt

I am practicing problems for my chemistry test and I am stuck on the following problem: The value of $x$ in $\ce{Fe(NH4)2(SO4)2 ⋅ xH2O}$ can be found by determining the amount, in moles, of sulfate ...
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How to decide acidic or basic nature of oxides

How can we theoretically decide the acidic or basic nature of an oxide? What are the reasons/ factors which make an oxide acidic, basic, amphoteric or netural?
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Equivant mass of double salt

What is the equivalent mass of double salt like dolomite? And what if the double salt is hydrated? Is a double salt taken as a single unit while equating the gram equivalent in any reaction? For ...
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2answers
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How many tetrahedral and octahedral holes are there in a bcc unit cell?

When I tried to count, I found 24 tetrahedral holes (each formed by 2 body centers of 2 unit cells sharing a face and 2 vertices of the same edge of that face). As each hole is being shared by 2 unit ...
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How to predict the products of an inorganic dehydration reaction?

For example, this reaction, is a dehydration reaction $\ce{ HNO3+ P4O10 -> N2O5 + HPO3} $ If I were only given the reactants side of the equation, how would I predict the products side of it? ...
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Vanadium Ions from Vanadium Pentoxide (V2O5)

I'm working on a project that needs vanadium (+5) ions. I have 18m sulfuric acid (though I've been diluting it to around 2m) and V2O5. I know that the +5 ion is soluble in sulfuric acid, but how do I ...
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How can you explain the solubility of BeF2?

I know that Be has a tendency to create bonds with an increase covalent character so I can tell that BeF2 is more covalent than let's say MgF2. So why is BeF2 soluble in water while MgF2 is barely ...
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Indicator for H2S [closed]

In there an indicator for sulfur compounds like H2S (also organic)? Or some straight forward way to measure if the H2S concentration in the air is higher than usual? Or is the concentration too low ...
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Why does strength of bond matter if melting only affects the the intermolecular of the molecules

So as I've been told, when a substance melts, the actual bonds of the substance aren't broken, only the IMFs (inter-molecular forces). So why is it that metal groups decrease in melting points going ...
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How to disperse and disolve acrylate copoylmer?

I've made many attempts to dissolve my acryalte copolymer into water, i've tried both hot and cold, stirred and used a grinder to dissolve it but it doesn't. Anyone who can help?

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