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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Reaction between nitric acid and Mg

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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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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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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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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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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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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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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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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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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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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which kind of common stainless steel grade is corrosion resistant for evaporating water from ammonium chloride solution

I want to know would 316L and 317L grade stainless steel resist corrosion for evaporating water from ammonium chloride solution
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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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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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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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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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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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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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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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The number of non-bonding electrons present in the frontier molecular orbitals of HF? [closed]

(a)10 (b)4 (c)6 (d)8 I don't understand the word frontier molecular orbitals. And also how the answer is 4.
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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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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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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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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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What amount of moles do we use when calculating enthalpy from caliometry data? [closed]

I was just wondering why we use this specific amount moles and not the total moles of the reactants Any help is much appreciated
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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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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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What is a non-toxic adhesive that can be used in the creation of cosmetics? [closed]

I'm not a chemist so bare with me! I am in the process of creating non-toxic cosmetics but I am having trouble getting my products to stick when they're applied. The products I create immediately get ...
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2answers
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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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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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Shielding effects and atomic size [closed]

The atomic size on going from aluminum to gallium decreases because of poor shielding effect of the $(n-1)d$ electrons, but on going from copper to zinc, the size increases due to the same shielding ...
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Why is the HOMO-LUMO gap in N2 and CO of different sizes? [closed]

Why is the HOMO-LUMO gap in $\ce{N2}$ and $\ce{CO}$ different even though they have the same number of valence electrons?
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Why is there a dip in the graph of Melting point Vs Atomic no between Cr Mn, Mo Tc, W Re [duplicate]

So i know that the since Cr have maximum unpaired electron in the 1st d series so maximum bond strength so highest m.p but why is there a big drop because Mn also have 5 unpaired electron which gives ...
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Would Zirconium (IV) Silicate be stable in a hot oxygen atmosphere?

As per the title, really. I potentially need to protect a bit of pipework from hot oxygen (800-1000 K), and I've seen this refractory paint for sale. It says it's good up to 1750 C, but hot oxygen is ...
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Why does N(OH)3 not exist?

The hydrolysis of Group-15 tetrahalides gives us their hydroxides via a $\ce{S_{N^2}}$ mechanism: $$\ce{PCl3 + 3H2O -> H3PO3 + 3HCl}$$ Nitrogen Trichloride, however, yields a different set of ...
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Hybridization of terminal O atoms in ozone [duplicate]

Most searches about the question of hybridization of O atoms in ozone only deal with the middle O atom, which is sp2. The outer ones are either sp2 or sp3 hybridized depending on which individual ...
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What is the color of a FeS4O6 solution [closed]

What is the colour of FeS4O6 solution?!
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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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1answer
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Trends in solubility of group 2 nitrates

In my lab report, we are required to explain the trends in solubility of group 2 salts, going down the group. I had explained all of the trends except one, group 2 nitrates. The following is the data ...
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1answer
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A sealed container contains 90 % hydrogen and 10 % oxygen. There is a spark in the container. What happens? [closed]

A sealed container contains 90 % hydrogen and 10 % oxygen. There is a spark in the container. What happens? Assuming it is a 10-litre volume container like a fuel tank.
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Why are borates more stable than aluminates? [closed]

In the differences between Boron and Aluminium, it is given that boron forms stable Borates and Aluminium forms unstable aluminates . Please explain the stability of the 2 compounds.
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Understanding @ symbol used in material science

Hello I'm trying to do some research and came across the phrase "Silicone Rubber/Paraffin@Silicon Dioxide" also written as $\ce{SR/pa@SiO2}.$ Any help in understanding what this means is greatly ...
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1answer
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Predicting directions of redox reactions [closed]

Hello! In this textbook example question, how come the chlorine reaction, which has the greatest reducing power will not react? If it has the greatest E of 1.36 V that means it has most reducing ...
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1answer
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Can a sulfur atom form six single bonds with six other sulfur atoms?

I found out that diamonds consist entirely of carbons singly bonded to other carbons, and it made me curious as to what other elements could form the same structure. Silicon came to mind, being in the ...
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Spacing between adjacent planes of a given set in a simple cubic crystal

Today I learned about Miller indices in a cubic crystal, and I learned that adjacent planes $(hkl)$ in a simple cubic crystal are spaced a distance $d_{hkl}$ from each other, with $d_{hkl}$ given by: ...
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Definition of a cluster [closed]

Wikipedia defines a cluster as an ensemble of bound atoms or molecules that is intermediate in size between a molecule and a bulk solid. What is meant by a bulk solid? I can't find a definition ...
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2answers
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Solubility and wetting of substances in water [closed]

We have seen that, when we pour salt in water then it gets dissolved, that means it is soluble in water. But when we pour sand into water then it doesn't dissolve in water, that means it is insoluble, ...
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Why does hydrogen have a lower ionization energy than fluorine?

I found here that the ionization energy of hydrogen is $\pu{1312kJ/mol}$ and for fluorine, it is $\pu{1681kJ/mol}$. Now clearly, from the data, we can see that hydrogen has a lower ionization energy ...
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Is reverse transition is possible?

We have seen many times, especially in d-block, where an atom of d-block like $\ce{Cr}$ which has outer most atomic configuration as $4s^2$, $3d^4$, there will be a transfer of one electron from ...

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