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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1answer
68 views

Reaction between barium peroxide and hypochlorous acid

When $\ce{BaO2}$ reacts with $\ce{HClO},$ the question tells us that that oxygen, barium chloride and one other product is formed. The equation I came up with is $$\ce{BaO2 + 2 HClO -> BaCl2 + 2 O2 ...
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Iron-II to iron-III change in complex formation

We have an iron dust sample, which is treated with hydrogen chloride in aqueous solution. The solution enters in a reaction with a sodium hydroxide powder, from which we obtain a precipitate. Could we ...
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Why is sea salt coarse?

What makes sea salt coarser than other salt? I have tried checking online but no one seems to discuss this. It seems that the grain of sea salt is larger, but I don't understand since the salt is ...
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Are we technically reducing electrodes/wires for the instant that an electron passes through them?

In lecture I was taught that, in a galvanic cell at standard conditions, platinum is often used as an inert electrode when the species being oxidized or reduced exists only in solution, because ...
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Why ammonium hydroxide precipitates metal salts?

When I was going through the chapter on pnicotgens, I got to know that ammonia acts as a Lewis base and it dissociates in water giving out hydroxide ion and the further hydroxide of ammonia, which we ...
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227 views

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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1answer
62 views

Balancing redox reaction of zinc and hot diluted nitric acid

I need to balance the following reaction: $$\ce{Zn + HNO3 -> Zn(NO3)2 + NH4NO3 + H2O}$$ I assigned all oxidation numbers: $$\ce{\overset{0}{Zn} + \overset{+1}{H}\overset{+5}{N}\overset{-2}{O_3}\...
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About the charge of diazomethane [duplicate]

Why does the carbon of the diazomethane get negative charge and the nitrogen get the positive charge? I would like to know why this molecule ionizes like it.
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1answer
68 views

Zinc screw turning black [closed]

I tried one experiment. I started with ordinal yellow zinc screws. The screws were sumberged in bath of two parts of $4.7\%$ solution of $\ce{NaClO}$ and one part $\ce{NaOH}$. The screws turned ...
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Why does malleability and ductility of interstitial carbides decrease?

Why does the malleability and ductility of interstitial carbides decrease? I read the following in my book, but I am not able to find what is the reason for the same. Why does this happen? Is it to do ...
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Slater's Rule and penetrating power contradiction

If we consider a 4s electron then it will be affected by 3d and 3p both (among others). Now 3d has slater's constant as 1.00 but 3p has slater's constant as 0.85, however 3d has poor shielding, then ...
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Reaction of Boron with Alkali

In one of my books it is written that boron does not react with alkali but in another book it is written that it reacts with alkali. Can any one help in clearing this confusion?
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The type of H-NMR spectra observed for S=PF2H and other inorganic molecules similar to this

I was hoping to learn more about the types of splitting observed in inorganic molecules such as S=PF2H. I am familiar with the typical splitting patterns associated with the study of organic molecules ...
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Describe with data why NH3, H2O and HF have higher boiling points than might be expected? [closed]

Please help me to answer this question. Describe with data why NH3, H2O and HF have higher boiling points than might be expected?
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Why do diplumbenes (Pb=Pb double bonded compounds) break apart in hydrocarbon solution?

In group 14, the double bond becomes increasingly weaker down the group. Our lecturer told us that many distannenes ($\ce{>Sn=Sn<}$) and almost all diplumbenes ($\ce{>Pb=Pb<}$) dissociate ...
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recrystalization [closed]

What mass of potassium bromate crystallizes on cooling 356 g of a saturated solution at 80 ° C to 20 ° C? ​ 100 g of water dissolve 34.0 g at 80 ° C and 7 g of salt at 20 ° C​
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Enthalpy vs. delta enthalpy

I haven’t really found a clear answer. Enthalpy is measured as the sum of internal energy (kinetic and potential energy) and pressure times volume. However, I don’t really see the value of measuring ...
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1answer
62 views

Determine reaction order and reaction rate

In a solution of $\ce{Fe^3+}$ the concentration was measured to be: $$\begin{array}{c|c} t/\pu{min} & \ce{[Fe^3+]}/\pu{\mu M} \\ \hline 10\ & 238\\ 20 & 227\\ 40\ & 206\\ 60\ & ...
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Why is dsp3d type hybridisation not possible in Ni(II) octahedral complexes. (using VBT arguments) [closed]

In "Inorganic Chemistry, Gary L. Miessler, D. A. Tarr, 3rd Edition, (p 351)" it is written as follows: "For the octahedral complex, hybrid orbitals are either d2sp3 or sp3d2. In case of ...
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What is the difference between complex ion and coordination compound?

From my understanding, complex ion has to be charged unlike coordination compound that can be neutral or charged, this is the only difference i could find, but what about a compound like [Mn(H2O)6]3+ ...
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Nitrate vs Sulphate oxidizing power [closed]

I was recently going through the chemistry of the 15th and 16th group elements,and I noticed that nitrate was given to be a much stronger oxidizing agent than sulphate. Why is this so?
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How does Potassium Hexfluoronickelate(IV) exist in a stable state?

Nickel generally does not exist in a $+4$ Oxidation state. Wikipedia has the following to say regarding Nickel(IV): Ni(IV) is present in the mixed oxide $\ce{BaNiO3}$. ....... Ni(IV) remains a rare ...
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352 views

Does iron(VI) fluoride exist?

Why does $\ce{FeF6}$ not exist? There are hexavalent iron compounds, so that is not the problem. There is the $\ce{[Fe(CN)6]^3-}$ ion, so there doesn't seem to be a steric problem.
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Are CaOCl2 and Ca(OCl)2 same or different? [duplicate]

Are the two compounds same? Also, which one is considered bleaching powder? Please explain their differences on the basis of their structures also.
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Reactivity order among Interhalogens

I was reading about Interhalogens in JD Lee and in the book it is stated that (without any reasoning) the reactivity order for few of the interhalogens is :- $\ce{ClF_3 > BrF_5 > IF_7 > ClF &...
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1answer
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How to make silicic acid, potassium silicate or calcium silicate?

I am a student of tropical agriculture. I am taking the class of agronomic chemistry and plant nutrition. I want to make use of silicate source I have at home for e.g. zeolite, wood ashes, ...
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what are some big open questions in solution or condensed phase, physical, organic or inorganic chemistry? [closed]

I am sorry if that is not the right forum to ask, but I am really curious about this, and trying to understand where to invest my efforts next. I am trying to follow the literature, but sometimes I ...
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1answer
39 views

Performing XPS on Pt–Ru/C nanoparticles

From what I understand, to get clear peaks, $\ce{Pt}$ is analyzed at $\ce{Pt}$ 4f; and $\ce{Ru}$ at $\ce{Pt}$ 3d. However, if i'm not mistaken, charge correction is needed. But $\ce{Ru}$ 3d(280/284 eV)...
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1answer
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Diffusion of multiple gases at once

Graham’s law of diffusion states the rate of diffusion between two gases is inversely proportional to their molar masses. Now, this is helpful when we are focused on two gases. But that is rarely the ...
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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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1answer
861 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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1answer
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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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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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1answer
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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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1answer
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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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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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1answer
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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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1answer
347 views

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'...
3
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1answer
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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 [closed]

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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3answers
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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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1answer
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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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1answer
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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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