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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Comparing formulas for magnetic susceptibility using spin angular momentum and number of unpaired electrons

How do I prove that $\mu_\mathrm{eff} = \sqrt{S(S+1)}$ is equal to the spin-only formula $\mu_\mathrm{eff} = \sqrt{n(n+2)}$? Where S is the spin angular momentum of an electron and n is the number of ...
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Reduction of copper oxide by hydrogen

In the concluding part of my previous question, wouldn't there be an explosion near the hole in the tube from where the excess hydrogen is coming out instead of a steadily burning flame?
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853 views

Comparing explosive properties of mercury(II) cyanate and mercury(II) fulminate

I found this question online on Jiskha Homework Help: Of the compounds mercury(II) cyanate, $\ce{Hg(OCN)2},$ and mercury(II) fulminate, $\ce{Hg(CNO)2},$ one is highly explosive, the other is not. ...
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Performing XPS on Pt–Ru/C nanoparticles

From what I understand, to get clear peaks, Pt is analyzed at Pt4f; and Ru at Ru at Ru3d. However, if i'm not mistaken, charge correction is needed. But Ru3d(280/284) overlaps with C1s(284) So I ...
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How to convert cell diagram to a chemical equation?

How would one convert on the right side of the cell diagram: $$\ce{Zn(s) | Zn^2+(aq) || MnO4-(aq), Mn^2+(aq), H+(aq) | Pt(s)}$$ $$ \begin{align} \ce{Zn(s) &-> Zn^2+(aq)} \tag{ox}\\ \ce{MnO4-(aq)...
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How can co(en)3 be chiral? [duplicate]

In organic chemistry lectures; we learned that in order to be chiral molecule, there must be 4 different groups attached. In inorganic chemistry lecture; if we examine co(en)3 or any M-(A-A)3 molecule;...
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Solubility of Beryllium Compounds in Water [duplicate]

Why is $\ce{BeF2}$ is highly soluble in water but $\ce{Be(OH)2}$ is insoluble? Both release $\ce{Be^{2+}}$ ion so this means they both have high hydration enthalpies and can easily overcome their ...
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Understanding Bent's rule [duplicate]

Why according to Bent's rule, do electronegative atoms tend to stay in hybridized orbitals with less S characteristic?
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61 views

Why is Ka of weak acid increasing while being diluted?

I am calculating $K_\mathrm{a}$ and percent dissociation of acetic acid being diluted to $\pu{1.00 \times 10^{-1} M}$, $\pu{1.00 \times 10^{-2} M}$, and $\pu{1.00 \times 10^{-4} M}$. The $\mathrm{pH}$ ...
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Why is chloride measurment 0 [closed]

In class we did an experiment to measure chloride in different water sources, including a lake. We used Ion-selective electrode of Ag/AgCl technique. We did the calibration curve and all steps and ...
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Find X and Y elements an calculate mass and number of atoms [closed]

Mr. Mendeleev found elements known as element X and element Y, he found that element X and element Y are one of the transition element and non-metallic respectively in the Periodic Table Identify ...
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347 views

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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Reaction of Copper and concentrated sulphuric acid

We know that dilute $\ce{ H2SO4}$ doesn't react with copper because copper has higher reduction potential ($0.33$) as compared to hydrogen ($0.00$). However, it reacts with conc. $\ce{H2SO4}$ and ...
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Determination of spinel structure by CFSE

$\ce{CuFe2O4}$ has inverse spinel structure, but $\ce{ZnFe2O4}$ has normal spinel structure. Explain. I know that normal spinels have a structure like $\ce{(A^{II})^{tet}(B^{III})^{oct}_2O_4}$-like ...
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Spontaneity and nature of attack of fluorine gas on aluminum

What is the nature of the reaction of attack of fluorine gas on aluminum metal? Is it spontaneous in nature? I have studied reactions of halogens on aluminum but it had no information about the attack ...
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Hydrogen peroxide on damp clothes left out in the sun [duplicate]

Somebody told me that sunlight is a good bleach for clothes because leaving damp clothes outside in the sunlight will turn some of the water into hydrogen peroxide. Is this true. If yes, then why can'...
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p-Nitroaniline reaction with sulfuric acid

An alternative version of the well-known demonstration carbon snake (the dehydration reaction of sugar by concentrated sulfuric acid forming a column of graphite) consists in mixing paranitroaniline ...
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Bond order in coordination complexes

A recent question I stumbled upon asked how to determine the bond order of the $\ce {Ni}-\ce H$ bond in the complex $[\ce {Ni}\ce H_4]^{4-}$. The answer they gave was $1/4$ but I am completely unsure ...
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Why doesn't copper react with hydrochloric acid while the other metals do?

5) Which one of the following metals does not react with hydrochloric acid? A. zinc B. magnesium C. iron D. copper E. aluminium The right answer must be copper, but why ...
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Order of dipole moments

What is the order of dipole moments for $\ce{SO3, SiO2, P2O5,}$ and $\ce{Cl2O7}$? This question is from a book and the answer given is $\ce{Cl2O7 < SO3 < P2O5 < SiO2}$. Can someone explain ...
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How to use Sodium Thiosulfate for fixing dicopper (I) tetraiodomercurate (II)?

DISCLAIMER DO NOT TRY TO DEMERCURATE USING DESCRIBED PROCEDURE. CONSULT YOUR EMERGENCY SERVICE. I found a discrepancy between a government-approved procedure of living quarters demercuration and the ...
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Chemical properties of dicopper (I) tetraiodomercurate (II)

This is a continuation from my previous post. Where can I find information on the chemical properties of $\ce{Cu2[HgI4]}$? I found a mention that in reaction with $\ce{Na2S2O3}$ in presence of acid ...
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Explanation of rusting of iron through metallic bonding

1 ) [O - oxygen atoms , red dots - electron ] Explaining rusting of iron due to metallic bonding. So , here delocalisation of electron happens between Fe and Fe atoms. After some time , there is ...
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Are the orders of reactants with respect to a reaction different for different starting concentrations?

I have found the rate constant and found that the orders of ethyl iodide and pyridine are both 1 with respect to the reaction when their initial concentrations were both 0.1 M. I would have thought ...
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Justify assuming first-order kinetics for a complex

For the hydrolysis of $trans-\ce{[Co(en)2Cl2]Cl}$ (and cis) we measured reaction rates via spectrophotometry. Plots of change in absorbance $(\ln(A-A_\infty))$ were used to determine the rate law and ...
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I want to prepare copper(1) sulfide in lab which chemicals would be required and by which method? [closed]

I want to know a simple method to prepare copper(1) sulfide with least expensive chemicals and in short time. further, using cuprous chloride with which sulfide gives copper (1) sulfide is there any ...
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607 views

Reason for inconsistency in specific gravity of calcium choride added to water

I am seeing a significant change in specific gravity of products upon addition of $\ce{CaCl2}$ to water. The mass and volume of what goes in doesn't match my total specific gravity of what comes out. ...
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How can a v/v% of ferric chloride hexahydrate be stated as a v/v% of ferric chloride? [closed]

I have the SDS sheet for a chemical solution where the $v/v\%$ is stated as 62.7% for ferric chloride hexahydrate ($\ce{FeCl3.6H2O}$) and I need to find the $v/v\%$ for ferric chloride ($\ce{FeCl3}$) ...
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Splitting carbon dioxide into carbon and oxygen [closed]

Would it be possible to split $\ce{CO2}$ into carbon and oxygen? We know that through the process of electrolysis ionic substances can be broken down into the elements they are made from by passing ...
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Effective Atomic Number stability comparison for equidistant values

EAN(Effective Atomic Number):- The amount of electrons around the central ion. EAN=(Atomic number - oxidation state)+(Number of electrons donated by ligands) Sidgwick's EAN Rule:- Sidgwick suggested ...
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Potassium permanganate structurre

So I'm learning about Lewis structures for university. I was reading a book written by some teachers from my university and in one exercise they ask us to draw the Lewis structure for potassium ...
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What is left over when water and sodium hypochorate decompose, i.e. household bleach? [duplicate]

I am having some confusion in understanding the decompostion of household bleach. One website says bleach decomposes to salt and sodium chlorate, simple enough. Orther wedsites say bleach decomposes ...
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Invisible spin allowed transitions in Tanabe-Sugano diagrams

In class we are looking at Tanabe-Sugano diagrams, more concretely at transitions for a d2 complex. I understand that the only spin allowed transitions are those that have a triplet state, therefore ...
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What is the difference between boron trioxide and boric anhydride? [closed]

In my chemistry textbook, both boron trioxide and boric anhydride given under the same formula ( B2O3 ), so why are there names different? I tried googling the question but didn't find any ...
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Calculate concentrations of ions after acid-base reaction given volumes and concentrations

A $\pu{35.0 mL}$ of $\pu{4000 ppm}$ $\ce{HCl}$ solution is mixed with $\pu{45.0 mL}$ of $\pu{0.1025M}$ $\ce{NaOH}$ solution. Assume volumes are additive. $$\ce{NaOH(aq) + HCl(aq) -> NaCl(aq) + H2O(...
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Does 50% hydrogen peroxide dissolve gold?

We have seen that the silver electrodes on a piezo element are being seemingly dissolved by exposure to our mixture of $50\,\%$ hydrogen peroxide. I was wondering if we were to switch to gold ...
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Should I be worried about the waste from “sugar rockets” and other potassium nitrate fireworks?

"Sugar rockets" or sparklers made of metal fillings, potassium nitrate and some carbon compound are easily made, and there is a lot of tutorials and videos on the internet suggesting them as ...
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If X is not salt, then what is X? [closed]

I have a homework : Cu + Cl2 = X. The reaction occurs under ideal conditions. If X is not salt, then what is X?
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Energy level of molecular orbitals in heteronuclear diatomic compounds

I have been studying the molecular orbital theorem. I read that the energy levels for the $\ce{p}$ orbitals in the first series of $\ce{p}$ block molecules are something to the tune of $$\pi_x=\pi_y&...
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1answer
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Why is the disordered CuAu structure more stable at high temperatures?

I know that the disordered CuAu structure is based around FCC whereas the ordered CuAu structure is tetragonal. Why would the FCC structure be more stable at high temperatures? For context, I was ...
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Why doesn't the $5s$ orbital involve in $sp^{3}d^{2}$ hybridization? [closed]

Consider a co-ordinate complex like $[CoF_{6}]^{-3}$ for example. Here the hybridization is $sp^{3}d^{2}$ by the Valence Bond Theory, as illustrated also in this solution to a question on the same: I ...
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1answer
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Copper plating with electrolyte not working (Cu(OH)2 vs CuSO4)

I've been experimenting using electroplating, and I recently made a solution by placing two copper pieces connected to a voltage source, in water. I suspect that this created copper(II) hydroxide, as ...
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Struvite Crystals: How does it form?

I'm in general chemistry, and I was wondering how ionic species crystallize and form the shapes they do, specifically in regard to the Struvite precipitate $\ce{MgNH_4PO_4. 6H_2O}$. Deconstructing the ...
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Reaction between magnesium metal and sodium hydroxide: Does this even happen?

Came across this question in a book: Among aluminum, zinc, tin and magnesium, which metals (if any) will react with an aqueous solution of sodium hydroxide to displace dihydrogen? The answer to ...
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Equivalence point pH derivation of a tribasic acid

Considering $\pu{100 mL} \ \pu{0.1 M} \ \ce{H3A}$ and $\pu{0.1 M} \ \ce{NaOH}$ titration curve: I understood the half equivalence points, but couldn't understand the reason why $\mathrm{pH} = \frac{1}...
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If the current is kept to zero in a potentiometric cell then how do electrons move from one electrode to the other?

If the current is kept to zero then how do electrons move from one electrode to the other electrode? How would the reduction happen if electrons don't move from one electrode to the other electrode?
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711 views

What is the role of hydration enthalpy in oxidation?

My textbook says that the greater oxidising behavior of fluorine than chlorine can be attributed to the high hydration enthalpy of $\ce{F-}$ ions and the low dissociation enthalpy of $\ce{F-F}$ bond. ...
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Cinnabar decomposition by heating optional method?

Is it possible to decompose cinnabar into $\ce{Hg}$ and $\ce{S}$ instead of $\ce{Hg + SO2}$ with roasting and heating. What conditions need to be satisfied in the new method?
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