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 calculate the temperature when equipartition is estimated [closed]

what must be the temperature be before the energy estimated from equipartition theorem is within 2 percent of the energy given. please help me to solve this. E= hcv/e^(bhcv)-1 v is the wavenumber is ...
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Do we need to memorize the formula of water H2O? Why is water H2O? [closed]

Before anyone answers my question, I want to tell you something: I have zero knowledge of chemistry, which means no knowledge. So, it's the first question that came to my mind! Could anyone please ...
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Is it possible to make strong acids using (relatively) weak acids? [closed]

One of the routes of making hydrogen chloride involves heating a mixture of sodium bisulfate and sodium chloride. Considering that the equilibrium is constantly forced to shift to the right by ...
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What does valence electron mean (in the context of spdf orbitals)?

For a little bit of context, my background is in physics and my understanding of chemistry doesn't go past, say, middle school level. Recently, I decided to self-study chemistry and picked up "...
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Why is it that in most cases, the amounts of reactants and products are indicated in grams instead of the number for moles. Can you please help me [closed]

Why is it that in most cases, the amounts of reactants and products are indicated in grams instead of the number for moles.
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Why does mercury(II) nitrate form only when using concentrated nitric acid?

In the reaction between mercury and nitric acid, mercury(II) nitrate only forms when concentrated nitric acid is heated up and added to it, if the acid is dilute, mercury(I) nitrate forms. I ...
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Organic "friendly" oxidizers [closed]

are there any oxidizers I can use with organic solvents (ethanol, acetone...) that won't make them blow up? I need to dissolve metals in anhydrous organic environment, but I don't really need ...
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Why is the formation of the nitro isomer more favorable under acidic conditions

In the reaction between chloropenataamminecobalt and nitrite either the NO2 or the ONO linkage isomer is formed. This preference seems to be mainly due to the pH of the solution with acidic conditions ...
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Can a hydrate react with an acid differently than the anhydrous substance? [closed]

I am interested in $\mathrm{Na}_2\mathrm{S}\cdot3\mathrm{H}_2\mathrm{O}$ reacting with $\mathrm{HCl}$. Does it produce $\mathrm{H_2S}$ at room temperature? More generally can a hydrate of a substance ...
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Anionic surfactants sensitivity to hard water

It is known that anionic surfactants can be sensitive to hard water, as well that the sensitivity decreases according to their headgroup, where carboxylates are the most sensitive, followed by ...
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Why can’t we prepare all 15 geometrical isomers of Mabcdef type octahedral complex

He gave that only three in fifteen have been isolated ,why couldn’t we able prepare those additional 12 Geometric isomers? Can we prepare our desired geometric isomer?
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Why sodium metabisulphite is not an oxidising agent? [closed]

We know that maximum oxidation state of sulphur is +6.Whereas the oxidation state of sulphur in sodium metabisulphite is +3 and +5. Can't these oxidation states reduces a lower oxidation state? If it ...
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Why do ZnO particles clump when mixing it into a cream? [closed]

I added ZnO powder to a store-bought moisturizer and mixed them together. The ZnO particles ended up clumping in the moisturizer, where I thought they would stay apart and stick to the moisturizer. I ...
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How do we actually calculate attraction and repulsion while explains bond length? [closed]

I am a high school student and in my textbook there is a figure given in which two isolated hydrogen atoms approaches each other and we define bond length as the distance between their nuclei at ...
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Why total stereoisomers is 1 even if no geometrical isomers and optical-isomers are present [closed]

Let's for example take the complex structure type $\ce{MA_6}$, What will be the Total number of Stereo-isomers (=[Geometrical-isomers]+[optical-isomers]). My effort was that There will be no G.I and ...
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Is it possible to form silver oxide? [closed]

My reason for this question is that , silver is less reactive than hydrogen and hence does not react easily with oxygen even at high temperature ..same goes with gold too but still how are we able to ...
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Does boron exhibit +1 oxidation state?

My teacher told that boron exhibits only a $+3$ oxidation state, but he also wrote the unbalanced reaction $$\ce{B + C -> B4C}.$$ Carbon has greater electronegativity than boron leaving us with $\...
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A better understanding of the screening effect and how it works?

What I am taught- Inner shell electrons shield the outermost electrons from the attraction of nucleus. More closer the inner shell is to the nucleus, more its shielding effect. thus $n_s > n_p > ...
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Zetasizer - How can the Z-average mean be lower than all intensity measurements?

I recently used a Malvern Zetasizer on samples of Au nanoparticles in order to determine the size of the particles (we are looking for significant shifts in particle size between samples, and as such ...
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Total number of Isomers of [Co(NH3)5(NO2)](NO3)2 [closed]

I encountered this question in my country's Chemistry textbook of class 12. No solutions are published, but the answer given at the back states - "There are 10 possible isomers. (Hint: There are ...
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Can use lead(II) oxide instead of lead(IV) oxide in car battery?

Question: If the discharge input equation $\ce{PbO2}$ is replaced by $\ce{PbO}$, will the battery still work? I think the product will not be water anymore but hydrogen gas. I am asking this question ...
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Can we produce N-type semiconductors by using very high temperatures?

In the case of semiconductors in general, only a very thin layer of the wafer needs to be doped in order to obtain the desired electronic properties. The reaction conditions typically range from 600 ...
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How do I quantify a mix of SiO2 (amorphous), silicon (amorphous, polycrystal), graphite (dust) in a solid sample?

I collected solid samples from a plugged tube-side of a heat exchanger. These deposits include compounds such as hexachlorodisilane, hexachlorodisiloxane, pentachlorodisilane, graphite dust and ...
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Does solvate isomers exist for coordination compounds with ammonia solvent as ligand?

I could find many sources confirming the hydrate isomerism(with water as solvent) but I couldn't find any information about any other solvent. In all the sources "hydrate/solvate isomerism" ...
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Why does magnesium hydroxide solution solidify after passage of time?

I have been trying to make a suspension of magnesium hydroxide in water. Around 40% magnesium hydroxide w/w. Initially it is fluid, but as time passes, it solidifies. What is causing this?
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Is a tetrahedral complex with two symmetric bidentate ligands optically active?

If the shape of of a complex $\ce{M(AA)2}$ (with $\ce{AA}$, a bidentate ligand) is tetrahedral, then is it optically active? Currently I know that it is optically inactive, but I want to know the ...
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For a structure of a compouund optically active, what is the number of stereo isomers if no geometrical isomers are present?

Suppose for example the compounds $\ce{M(AA)3}$ and $\ce{M(AA)3bc}$, with $\ce{M}$, the central metal atom and $\ce{AA}$, a bidentate ligand. What is the total number of stereo-isomers of both? I was ...
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Stability of Lithium hydride over Sodium hydride

Why is LiH more stable to heat compared to NaH? The lithium cation is harder than the sodium cation. The hydride ion is soft. Hence, I would assume that LiH would be more stable compared to NaH, owing ...
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How to safely ship 5 litre container of liquid chemicals into glove box?

I need to transfer a 5 litre container of oxygen sensitive liquid chemicals within an inert atmosphere to smaller 100ml bottles. I'm going to do so using a vacuum glove box purged with nitrogen. I ...
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Why is sulphur not written as S8 here [duplicate]

I learnt that sulfur dioxide and hydrogen sulphide react to form sulfur and water. The reaction given was: $\ce{SO2 + 2 H2S -> 2 H2O + 3S}$ So why is the product sulfur written as $\ce{S}$ and not ...
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Is dehydration of cobalt(II) chloride hexahydrate dynamic equilibrium?

I know that the dehydration of cobalt(II) chloride hexahydrate is a reversible reaction, is it a dynamic equilibrium? $$ \begin{align} \ce{CoCl2·6H2O &<=> CoCl2·2H2O + 4 H2O}\tag{R1}\\ \ce{...
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Fundamentally, what is the difference between redox and acid-base reactions?

For example, consider: $$\ce{NH3 + H2O -> NH4+ + OH-}$$ Here, the $\ce{NH3}$ is acting as a base (By Lewis theory, it is an electron pair donor). Why don't we consider this to be a redox (there is ...
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Why are colloidal solutions of metals negatively charged?

Colloidal solutions of metals are negatively charged. The charge on the sol particles is due to electron capture by sol particles during electro-dispersion of metals. Electro dispersion involves ...
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Alpha particles and nitrogen triiodide

I've been reading Wikipedia's article on $\ce{NI_3}$ (which doesn't contain an $\ce{I_3^-}$ ion, so "nitrogen III iodide" would probably be a better name for it) and getting very confused. I'...
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How do I balance redox equations with three reactants?

Could anybody please explain me the concept of balancing redox reactions with three reactants? Either some solving steps or even the solution would be very appreciated. For example, I don't know how ...
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Cobalt glass colour of potassium as

Question: Cobalt glass colour of potassium as: A) Crimson red B) Lilac C) Apple green D) Brick red I thought option B as true because on flame test, potassium gives lilac colour. But the given ...
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What are the necessary conditions for formation of a Hydrogen Bond?

Usually Hydrogen bonds are associated with N,O,F as the atoms involved. In some cases OH---Cl bond is observed as in case of o-chlorophenol. According to the updated IUPAC definition a Hydrogen bond ...
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The electrolysis of aqueous sodium chloride: The products at cathode and anode

What will be produced at cathode and anode during the electrolysis of aqueous $\ce{NaCl}$? Suppose we carry out electrolysis of dilute $\ce{NaCl}$ and we need to find the products at cathode and ...
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Multiplicity prefixes for complex compounds with organic ligand

Consider the compound $[\ce{Ni(gly)_2}]$, with $\ce{gly}$ denoting glycinate ligand. Should the name be bis-(glycinato)nickel(II) or diglycinatonickel(II) In my book, it's written that the prefixes &...
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Spectroscopy of phosphite

These images were taken from IChO 2002 prep problems. May I please know why there are 7 peaks for C-H? This indicates that there are 6 hydrogens the H in the C-H is coupled too, but I can only find 5 (...
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What is the hybridization of copper in blue vitriol?

My book says that the structure of blue vitriol is the following: From the structure, I figured that since there are 4 water molecules coordinated to the cuprate ion, the hybridization should be $sp^...
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How to prepare a solution of Ferrous Iron?

I need to prepare a solution of Ferrous Iron (Fe2+). This solution will be used to test a water filtration system by simulating the Ferrous Iron that is sometimes present in well water. The system is ...
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Why exactly is the conduction band in semiconductors conducting?

Is it because when the electrons are excited to a higher energy level, they can lose energy and fall back down to lower energy levels? Due to the sheer number of antibonding MOs in the conduction band,...
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Isn't hydrogen chloride a salt, because it is an ionic compound? [closed]

So I just learned in chemistry that salts are ionic compounds. Shouldn't, $\ce{H+Cl-}$ be a salt since hydrogen ion has positive charge and chloride ion has negative charge? If $\ce{HCl}$ is a salt ...
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Why is the enthalpy of solution of hydrated calcium chloride positive?

My book says that the enthalpy of solution of anhydrous calcium chloride is negative because it produces hydrated calcium chloride. But when hydrated calcium chloride is dissolved in water, the ...
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What is the colour of cesium?

I am confused with the color of cesium. Some websites and books say that it is a silvery white metal, and some say it has a golden colour, and some say it has a silvery golden colour. Among these ...
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Does nascent Oxygen/Hydrogen really exist or just or is it just electron from ionic equation? [duplicate]

Recently I was taught by my teacher that there is no such thing as nascent oxygen neither hydrogen. It just represents Electrons from ionic equations. Then he proceeds to give example of following ...
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The effect of nonbonding electron pairs on ozone polarity

I know that ozone is a polar molecule. And our master has used the existence of nonbonding electron pairs on the central atom to justify this subject. I want to know how much the nonbonding electron ...
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Ease of reaction of hydrogen with alkali and alkaline earth metals

The ease of reaction of group 1 metals with hydrogen decreases as we go down the group. But why lithium requires high temperature than sodium, potassium and rubidium? What is exactly "ease of ...
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What is the chemical composition of Ferrous Ferrocyanide?

To this day, iron-cyanide complexes confuses me. So, I want to settle this once and for all. After scavenging the internet, I gathered the following result: $$ \ce{Ferr} \color{blue}{\ce{ous}}~\ce{...

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