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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Towards a hard Lewis base like water which is the stronger Lewis acid, silicon tetrachloride or tin (IV) chloride?

On Pauling scale, both $\ce{Si}$ and $\ce{Sn}$ have electronegativity value of $\mathrm{1.9}$. The difference is in size of d-orbitals which accept lone pair of electrons. $\ce{Si}$ has vacant 3d-...
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Raising melting point of water at STP (using disolved impurities)

Typically, water experiences melting point depression when it is impure. The more impure it is, the lower the melting point, up to a point. I understand you could raise the melting point by increasing ...
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What fumes are created/what is the product of C4H4ClNOS (Methylchloroisothiazolinone) when 10% NaHSO3 (sodium bisulfite) is applied?

What fumes are created/what is the product of $\ce{C4H4ClNOS}$ (Methylchloroisothiazolinone) when 10% $\ce{NaHSO3}$ (sodium bisulfite) is applied? The $\ce{C4H4ClNOS}$ is in dried residential paint, ...
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Which structure is correct for $PF_3C _2$ [duplicate]

$PF_3C _2$ There are two structures among which I want to confirm which one is correct for this : In this picture which is common for both is that bond angles between equatorial positions is 120 ...
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Redox reaction between Potassium thiocyanate and iodine

How would you balance the following redox reaction in acidic medium? $$\ce{KSCN + H2O + I2 -> KHSO4 + HI + ICN}$$ In this reaction, it seems the sulfur is being oxidized but iodine is undergoing ...
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Why boron trihydride is weaker lewis acid than boron tribromide and boron tri-iodide?

There is no back-bonding in case of boron trihydride so it is a stronger lewis acid than boron trichloride ( even though chlorine atom is more electronegative than hydrogen atom). Then why boron ...
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Why cannot HF form dative bonds with transition metallic ions?

Since fluorine in HF has three lone pairs of electrons, but why does it still cannot form dative bonds?
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Lewis structure of nitric oxide

These are the two resonating structures of $\ce{NO}$ given in my textbook: $$\ce{:\!N=\overset{\Large .\!\!.}{\underset{\Large .}{O}}\!: <-> :\!\overset{\Large .}{N}=\overset{\Large .\!\!.}{O}\!...
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Why do NaHCO₃ and KHCO₃ have different crystal structures?

Why do $\ce{NaHCO3}$ and $\ce{KHCO3}$ have different crystal structures? We had this in a test today and this got me stumped... My questions are: Do $\ce{NaHCO3}$ and $\ce{KHCO3}$ possess crystal ...
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Can nitric oxide(NO) reduce Xenon Fluorides

I came across the following question: $\ce{XeF_4}$ 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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How can one reclaim isotopic cadmium from a solution of acid, i.e. H2SO4 or HCl etc.?

I have dissolved isotopic cadmium-114 with $\ce{H2SO4}$ and or $\ce{HCl}$. Now that I have the cadmium-114 in solution, precipitating out $\ce{CdSO4}$ and or $\ce{CdCl2}$, how can I reduce these ...
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Why does the stability of halide ions in aqueous solution increase down the group despite smaller ions having higher charge density?

The acidic strength order of hydrogen halides is HI > HBr > HCl > HF, and to explain this my teacher said that in aqueous solution the stability of their conjugate bases is I- > Br- > ...
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how to show the coordinate bond in avogadro?

I have this structure figure 1, I want to visualize by Avogadro, but the shape is not as I want like in figure 2 where I used Molden, so how can I make Avogadro draw the coordinate bonds.
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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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Why don't beryllium and magnesium dissolve in ammonia?

From my textbook: The [alkali and] alkaline earth metals dissolve in liquid ammonia to give deep blue solutions forming ammoniated ions. $$\text{M}+(x+y)\text{NH}_3 \rightarrow [\text{M}(\text{NH}_3)...
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Is “double dot” (“··”) notation used for a double radical?

I wondered if this was a typo in the notes given to me. I haven’t come across notation like this before: Branching — steps in which number of radicals increases (can lead to explosion) $$\ce{H^. + O2 ...
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Why is silicon dioxide acidic in nature and not amphoteric in nature? [closed]

Silicon is a metalloid which means it has both metallic as well as non-metallic characteristics. But if silicon is a metalloid then why is silicon dioxide acidic in nature? If silicon has both ...
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How is silver chloride more soluble in brine than water?

I heard that: Silver chloride is more soluble in very concentrated NaCl solution (brine) than in pure water. Is it true? I mean, won't the common ion effect operate? Or is this maybe due to some ...
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How exactly does a buffer made up of a weak acid and its conjugate base work upon addition of hydroxide ions? [duplicate]

Consider a buffer solution containing a weak acid and its conjugate base ($c_\mathrm{total} = \pu{0.1 mol L-1}$): $$\ce{HA <=> H^+ + A^-}$$ When $\ce{H+}$ ions are added (from a strong acid), ...
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Why are there exactly 5 types of two-dimensional lattices, and what distinguishes them?

In the book Chemistry: The Central Science, they introduced the following 5 types of two-dimensional lattices: The book said that the blue square represents the unit cell, the black dots are lattice ...
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Effect of metal identity on CO bond length in carbonyl complexes

In organometallic carbonyl complexes, a back-donation effect occurs: the σ molecular orbital of CO yields electron density to an orbital of the appropriate metal atom, and in turn, a d orbital of ...
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Limitations on the 18-electron rule

The 18-electron rule and the corresponding methods for counting the total valence electrons of transition metal complexes are among the most useful basic tools in modern inorganic chemistry, ...
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1answer
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Association constant calculation in 3:1 complexes

I have a question about calculating the association constant related to 3:1 host-guest complexes. I am using the UV-vis titration method, I know the stoichiometry from the molar fraction method which ...
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What is the n-factor for reduction of chromate(VI) to chromium?

Here a reaction is given: $$\ce{CrO4^2- -> Cr}$$ I don't know the full reaction, but I made some estimates. One estimate was that on balancing charges we get two electrons on right-hand side. I ...
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Reactions of P2O5 and P4O10 with sulfuric acid [closed]

I have seen two reactions of $\ce{H2SO4}$, in one it reacts with $\ce{P2O5}$ and in the other $\ce{P4O10}$. The Reactions are as follows: $$\ce{H2SO4 + P2O5 -> SO3 + 2HPO3}$$ $$\ce{6H2SO4 + P4O10 -...
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Which will have more Lewis acid character out of BCl3 and AlCl?

Which will have more Lewis acid character out of $\ce{BCl3}$ and $\ce{AlCl3}$ ? My attempt: In $\ce{BCl3}$ backbonding takes place and there is $\mathrm{3pπ-2pπ}$ overlap, and in $\ce{AlCl3}$ there ...
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Doubt on Nomenclature of oxa-acids of PBLOCK elements please share your valuable knowledge? [duplicate]

I know how to draw the structure of these compounds but don’t know reason behind why they got ortho,meta,pyro etc.. before their name Why h3po4 is called {orthophosphoric acid(why it is given ortho ...
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Are lithium bicarbonate and magnesium bicarbonate both soluble in water?

Are lithium bicarbonate and​ magnesium bicarbonate both soluble in water? Source: JEE Mains 2017 (National Level Examination of India) Please do cite a reputed source along with your answer. ...
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Order of Basicity of Nitrogen Trihalides

I was asked to arrange nitrogen tri-halides in order of increasing basicity. On looking up the answer online, it turned out to be the following: $\ce{NF3}$ < $\ce{NCl3}$ < $\ce{NBr3}$ < $\ce{...
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Decalcifying metal tubes using organic acids

I have a water that is saturated with Calcium Magnesium Carbonate $\ce{CaMg(CO3)_2}$ (Dolomite). This precipitates in particularly metal pipes and whenever the water is heated. Instead of ion exchange ...
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Is carbon dioxide organic or inorganic?

Today in chemistry class we were discussing Organic Chemistry. We discussed what organic compounds basically are and then I asked the teacher whether $\ce{CO_2}$ is organic or not. She told that it is ...
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Why H2S2 is hydrogen disulfide and not hydrogen persulfide?

Context: I was checking this question and in the answer, the compound $\ce{FeS2}$ was named "iron disulphide" (it was previously named "iron persulfide" but later changed after ...
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The Systematic IUPAC name of hydrogen sulfide [duplicate]

Why the Systematic IUPAC name of $\ce{H_2S}$ is Hydrogen Sulfide and not dihydrogen sulfide? The name of $\ce{N_2O_5}$ is dinitrogen pentoxide, so why is this not the case with $\ce{H_2S}$?
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What's the right way to prep anhydrous potassium ferrocyanide from potassium ferrocyanide trihydrate?

Orgo student here. I've got some potassium ferrocyanide trihydrate I tried dehydrating with no success. I put 20 g of potassium ferrocyanide trihydrate into a 30 mL crucible driven up to 150 C for 2 ...
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Why wouldn't a standard addition fluorometric method return the same starting concentration of a solution used to make the standards?

I am trying out a new standard addition method and having some very basic problems. I am hoping someone could point me in the right direction. I am using a fluorometric method to quantify ammonium in ...
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Can a magnesium atom combine with just one chlorine atom?

If I have a magnesium atom and a chlorine atom why can't the magnesium atom combine with just one chlorine atom? Wouldn't the magnesium atom become more stable, than it was before combining, as it ...
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Why the tendency of ClO3 to form dimer is high?

I read that tendency of $\ce{ClO2}$ to form dimer is less and that of $\ce{ClO3}$ to form dimer is more. I can understand the reason for the former because the unpaired electron is more delocalized ...
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Balancing reaction between copper and nitric acid given the ratio of formed nitrogen oxides

Problem $\ce{Cu}$ reacts with $\ce{HNO3}$ according to the equation $$\ce{Cu + HNO3 -> Cu(NO3)2 + NO + NO2 + H2O}$$ If $\ce{NO}$ and $\ce{NO2}$ are formed in 2:3 ratio, what is coefficient of $\ce{...
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Exchange energy of d6 configuration

In NCERT Chemistry book, it is given as: Exchange energy is responsible for the stabilization of energy state. Exchange energy is approximately proportional to the total number of possible pairs of ...
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Mathematical relation between bond angle and fraction of s or p character

In Concise Inorganic Chemistry by J.D.Lee (Adapted by Sudarsan Guha, Fourth Edition), on page 75, under the topic "Effect of Electronegativity - When the surrounding atom is same with different ...
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How would I go about developing a linker molecule that binds SiO2?

I'm trying to develop a molecule that acts as a bridge between a protein and surface of SiO2 lattice. The end that binds the protein is simple and easy but I can't figure out a way to draft up how I ...
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Can compounds found in concrete leach into soil against gravity?

I spent a while trying to figure out which stackexchange site in which to post this question, forgive me if I got it wrong. A number of scholarly articles indicate that concrete can leach calcium ...
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Does ammonia exhibit hydrogen bonding in its gaseous state?

I was reading the properties of ammonia in my book (NCERT Chemistry Part I, Textbook for Class XII) where it was written : In the solid and liquid states, it (ammonia) is associated through hydrogen ...
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What is the relation between strength of a base and the thermal stability of its salts?

In Concise Inorganic Chemistry, $5^{th}$ edition, by JD Lee, while discussing oxides and hydroxides of Group $2$ metals, it has been stated that: The increase in basic strength is illustrated by the ...
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How can metals like magnesium and sodium burn underwater?

Any websites I have found have conflicting answers. One said that they don't actually burn underwater, rather they separate hydrogen from oxygen and burn at the surface. Another actually said that ...
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Hybridization of nitrogen in trisilylamine, (SiH3)3N?

I want to know the hybridization of the central atom in $\ce{(SiH3)3N}$. I think it should be $\mathrm{sp^3}$, because $\ce{N}$ is attached to three silicon atoms and one lone pair. But actually it ...
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Can aluminium form blue-colored solution in liquid ammonia?

I've read that group 1 elements and group 2 elements with exception of Be form blue-colored solutions in liquid ammonia (Mg requires an electrolytic process). What are the conditions for a metal to ...
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Why is the oxidation state of Te in H2Te equal to -2?

Hydrogen has electronegativity of 2.2 whereas Telenium has electronegativity equal to 2.1. So since hydrogen is more electronegative than Telenium, as per what I have read, oxidation state of Te ...
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Why is the shape of xenon difluoride linear and not trigonal bi-pyramidal? [closed]

My explanation is, the shape of $\ce{XeF2}$ is actually trigonal bi-pyramidal, but as the 3 lone pairs of $\ce{Xe}$ remain so close to the $\ce{Xe}$ atom itself, it seems that $\ce{XeF2}$ has a linear ...
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Does sodium hydroxide react with ozone to produce sodium ozonide?

I read two reactions which I want to specify first: \begin{align} \ce{Na2O2 + O3 + H2O &-> 2NaOH + 2O2}\\ \ce{2KOH + 5O3 &-> 2KO3 + 5O2 + H2O} \end{align} Does $\ce{NaOH}$ also undergo ...

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