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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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$\ce{B2H6}$ fragment orbitals energy of $\ce{H2}$

I want to ask a question about the fragment orbitals of the $\ce{B2H6}$ system, specifically when I combine the $\ce{B2H4}$ with the $\ce{H2}$ fragments. I am halfway through my inorganic chemistry ...
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What is the right color of calcium copper titanate?

I'm browsing Alibaba for calcium copper titanium oxide $\ce{CaCu3Ti4O12}$ (CCTO) and I find it variety of colors: pure brown, pale brown, reddish brown or grayish dark brown. Wikipedia does not tell ...
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2answers
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Calculating partial pressure of carbon monoxide

$\ce{ZnO}$ is exposed to pure $\ce{CO}$ at $\pu{1300 K}$ and the equilibrium $$\ce{ZnO(s) + CO(g) <=> Zn(g) + CO2(g)}$$ is then established at $\pu{1 atm}$ pressure. The density of the ...
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Explanation for why nickel turns green in hydrochloric acid

My daughter has a chemistry test that I am helping her prepare for. One question is Nickel sulfate, $\ce{NiSO4(aq)}$ is a green solution. Nickel chloride, $\ce{NiCl2(aq)},$ is a yellow solution. If ...
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0answers
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lowering the pH of NaOCl solution

Hypochlorous acid is only commercially available in the form of sodium hypochlorite. From a chemical equilibrium standpoint, As the pH of the solution decreases, some of it changes to hypochlorous ...
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1answer
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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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0answers
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Dissolution of dilute solutions of hydrogen peroxide and sodium hypochlorite [on hold]

Can dilute solutions of hydrogen peroxide and sodium hypochlorite be mixed in a suitable container? If yes, to what extent?
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24 views

Inorganic foreign author books for odd electron species [duplicate]

I need a foreign author book which explains odd electron species in great detail ,(explaining dimerization , energetic) telling hybridization of central atom with one unpaired electron on it pls tell ...
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trisodium phosphate and water heat of reaction

I would like to know the trisodium phosphate and water heat of reaction. Can trisodiumphosphate in a closed vessel cause exotherm?. I am asking this because a closed vessel having tsp caused ...
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Inorganic foreign author books [duplicate]

I want to know the best foreign author books of following topics that cover them in full depth 1.) Chemical bonding (pls list down all books that explains every topic of bonding in great depth if ...
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1answer
85 views

Does a complex that has no overall charge still have color?

The iron complex $\ce{[Fe(H2O)6]^2+}$ is colored but I'm wondering, if a pair of chloride ion is inserted on its secondary valency to form [FeCl2(H2O)6], does the complex loose its color or not?
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2answers
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Why isn't iron(III) oxide an effective catalyst for decomposing hydrogen peroxide?

I've been working on a project involving the catalyst iron(III) oxide for decomposing hydrogen peroxide. It barely seemed to produce any oxygen. This YouTube video also seems to suggest that iron(...
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0answers
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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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1answer
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Is there a connection between M1V1=M2V2 and Boyle’s Law?

Recently in Chemistry 101 we learned about $M_1V_1=M_2V_2$, where $M$ is the molarity of the two mixtures and $V$ is their respective volumes. The first thing that popped into my mind when I saw ...
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1answer
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Is neutralized and dried suphuric acid still a hazard? Is it still acidic to touch?

I mistakenly put a sulfuric acid drain cleaner in my bathroom sink. Some of it spilled into the bathroom in my basement. I cleaned it up using baking soda, but I'm concerned if I missed any, whether ...
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Hess’ Law question [on hold]

The ionic equation for this reaction is shown. Ca(s) + 2H+(aq) → Ca2+(aq) + H2(g) ∆Ho = x kJmol–1 Construct a fully labelled Hess’ Law cycle to connect each side of this equation to the relevant gas ...
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Why highly electropositive elements form strong bases?

I know that elements like sodium form hydroxides completely dissociate in water than magnesium hydroxide. I came to a conclusion that the nature of bonding may affect this result, that is ostensibly ...
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1answer
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HCl synthesis from sulfuric acid and sodium salt

I'd like know if this is right. The reaction between $\ce{NaCl}$ and $\ce{H_2SO_4}$ should yield $\ce{HCl}$ and sodium sulfate. This is a double substitution, true? No oxidation took place here. The ...
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1answer
68 views

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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Why isn't Kw = ([H+][OH-]) / [H2O], when H2O is the reactant?

For the hypothetical reaction: $$ \ce{A <=> B + C}$$ the equilibrium constant expression is written as $$\ K= \frac{[\ce B][\ce C]}{[\ce A]} $$ So, why is $ K_\mathrm w $ written as: $$ K_\...
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1answer
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Electrophilic base / nucleophilic acid / basic electrophile / acidic nucleophile [on hold]

What I was understanding is that all bases are nucleophiles and acids are electrophiles means the condition for them is same and all nucleophiles are basic and all bases are nucleophiles and same for ...
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Effect of electronegativity [on hold]

Explain the effect of electronegativity when the surrounding atom is the same with different central atom having lone pair,refer to the second point of effect of electronegativity in Blockquote JD ...
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What determines how substances should be stored? [on hold]

(Що впливає на умови зберігання речовин) Some substances can be stored solely dissolved, others only pure. Give at least two fundamentally different examples of both organic and inorganic substances ...
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Decomposition of Metal Nitrates

An entrance JEE Main & Advanced AIEEE 2003 exam question: Which one of the following nitrates will leave behind a metal on strong heating? A. Copper nitrate B. Manganese nitrate C. ...
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1answer
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Use of cryolite and fluorspar in electrolytic reduction of pure alumina by Hall-Héroult process

Cryolite $\ce{(Na3AlF6)}$ and fluorspar $\ce{(CaF2)}$ are added to alumina to lower the temperature of the mixture from $\pu{2000 °C}$ to about $\pu{900 °C}$ and also to increase the conductance. But ...
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Back bonding in p block elements [on hold]

Why is back bonding not possible beyond period 3? As in why only between 2nd period elements and 2nd and 3rd period elements?
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1answer
14k views

How to calculate the mass of magnesium necessary to produce a certain volume of hydrogen gas?

How many grams of magnesium metal are required to produce 44.8 liters of hydrogen gas at STP according to the chemical equation shown below? (Answer: $48.6~\mathrm{g}$) $$\ce{Mg(s) + 2 HCl(aq) -> ...
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1answer
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Conditions for the reduction of dichromate by manganese(II) to chromium(III) [closed]

The unbalanced redox reaction $$\ce{Mn^2+ + Cr2O7^2- -> Mn^3+ + Cr^3+}$$ occurs in what type of condition? (a) Acidic (b) Basic (c) Neutral (d) Indeterminable
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How to homogenise Calcium Chloride Dihydrate with Corn Starch Powder? [closed]

How to homogenise Calcium Chloride Dihydrate (77%) with Corn Starch Powder? And then how to remove moisture in the mixture? What's reaction requires?
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Ionic lattice structure of copper (II) sulfate pentahydrate

I would like to ask about the structure of the $\ce {CuSO4*5H2O}$ solid. Recently, I have learnt that the colour of $\ce {CuSO4 * H2O}$, an intermediate in the thermal decomposition of the ...
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2answers
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Finding molarity of hyposulfite solution used in titration

$\pu{0.1 g}$ of $\ce{KIO3}$ is treated with excess $\ce{KI}$ solution. The liberated iodine required $\pu{44 ml}$ of $x$ molar hypo solution. Calculate the value of $x$. I have used the equivalent ...
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1answer
282 views

Calcium ion and sulfate did not form precipitate

I was in the chemistry lab earlier this week. We were doing a qualitative experiment (no concentration given for any solution). I added an unknown solution that contains $\ce{Ba^2+},$ $\ce{Ca^2+},$ ...
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Why do F and N don't make a bond? [closed]

The electronic Configuration of F has 2p5 in the end and N has 2p1 in the end. So N can give one of it's electron to F to aquire stability? Why dosen't this happen ?
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1answer
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Why does the displacement reaction of zinc in copper(II) sulfate solution result in dark metallic copper?

It is commonly known that when zinc metal is placed in a solution of copper(II) sulfate, a displacement reaction occurs, and elemental copper is deposited onto the decomposing zinc metal. A practical ...
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Why does ammonia have a pKa of 32.5 at −33 °C?

According to Wikipedia, ammonia has a $\mathrm{p}K_\mathrm{a}$ of $32.5$ at $\pu{-33 °C}.$ Why does it say that? Is it a typo? Isn't anything above $12$ is a very strong base? And both bases and ...
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1answer
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Question About Reversible Reactions and Batteries

So my book says that the batteries we have considered so far( Daniell cells) are low life span, because they reach equilibrium too fast. In the next paragraph, it says they are also made by ...
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1answer
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How can batteries reach equilibrium if the reactions are irreversible?

My book says that the batteries we have considered so far (Daniell cells) have a low life span because they reach equilibrium too quickly. In the next paragraph, it states they are also made by ...
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3answers
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Why is lithium the most reducing alkali metal, and not caesium?

Caesium has a larger size, and the effective nuclear charge that the valence electron experiences will be far less compared to that of lithium's, right? But lithium is still considered the strongest ...
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1answer
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Zinc evaporation/toxicity at room temperature [closed]

I have a (slightly embarrassing) question regarding zinc powder. I have recently broken an old mercury thermometer, and read that I can handle the mercury with powdered zinc - so I've sprinkled some ...
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I don't understand how hydration enthalpy is working for Cu+2 and Ni+2 [closed]

Even though Ni+2 has same hydration enthalpy as Cu+2 still Cu+2 has +reduction potential whereas Ni has negative
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Can sodium silicate be made insoluble?

In this question, the user asked about curing sodium silicate with calcium chloride. My question is, will the resultant product be insoluble in water? I know calcium silicate is only very slightly ...
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Based on chemistry p lock anser it? [closed]

On heating lead{2} nitrite gives a brown gas A . the gas A on cooling changes to colourless B solid. B on heating with NO chanes into bluesolid C.identify it A,B,C AND DRAW
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What is the mass of ozone present in 10.6 g of Na2CO3? [closed]

I got a question in my textbook asking for the mass of oxygen present in 10.6 grams of $\ce{Na2CO3}$. Why are they asking about the mass of oxygen? Does this refer to $\ce{O2}$? Shouldn't it be the ...
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What is the identity of the unknown? [closed]

I have calculated that the mass of the unknown is 2.02g. The mass of Epsom salt initially present in the unknown is 0.724g. The percentage of Epsom Salt in the unknown is 35.84%. The chemical formula ...
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Why does the dipole moment order of group 15 hydrides increase down the group?

The order given in my book is $$\ce{NH3} > \ce{SbH3} > \ce{AsH3} > \ce{PH3}$$ Phosphorous is more electronegative than arsenic and antimony. Then shouldn't the dipole moment be more in ...
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Why is Cu+1 less stable than Cu+2? Shouldn't it be the other way around? [duplicate]

After all in +1 state all the d orbitals degenerates are completely filled but in +2 only 4 degenerates are paired, there is an unpaired electron.
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Bond dissociation energy order for C−C, N−N, O−O and F−F single bonds

Data from Chemistry LibreTexts — Strength of Covalent Bonds, Table 8.8.1: Average Bond Energies (kJ/mol) for Commonly Encountered Bonds at 273 K: $$ \begin{array}{cr} \hline \text{Bond} & D/\pu{...
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1answer
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Distinguishing between octahedral and tetrahedral holes

I know the question sounds a bit silly and there are many similar answered questions but my 3D visualization (imagination) is very bad. There are some images of octahedral and tetrahedral holes but ...