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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Question on d block contraction

For size trend down a group, it is known that:$$Al\gt Ga$$ Due, to d block contraction of gallium. Why isn't this the case when it comes to silicon and germanium? Won't the poor shielding effect from ...
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What is the angle of separation between the electronic groups of the XeF6?

I have a question regarding a molecule geometry that is difficult for me and it is that of XeF6. I am sure that the name of this structure is distorted octahedral, however, I cannot find anywhere the ...
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During synthesis of mixed ligand complexes a slurry is forming instead of crystals? [closed]

I am working on mixed ligand synthesis of amino acids with different metals, after refluxing the solution for 3 hours and leaving it for days slurry is forming. What to do with slurry?
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What is the correct electronic configuration of darmstadtium?

Some of the places, the electronic configuration of darmstadtium ($\ce{Ds}$) is given as $\mathrm{6d^9 7s^1}$ while at some other places, it is $\mathrm{6d^8 7s^2}$. Which among the two is correct?
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What does Co(II) mean? [closed]

I don't understand what the (II) signifies and why Co(II) has a different electronic configuration Also when given metals like this how to find it's electronic configuration . I assume it to be like a ...
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Mg + Mixture of compounds [closed]

Tell the direct answer please, No need to show steps
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Confusion about hydrated alkaline earth metal cation

So, I was reading through my Chemistry textbook about hydrated metal cations where I noticed that Beryllium attached to just 4 water molecules when hydrated but magnesium attached to 6 or 8 water ...
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Radius of hydride (H⁻) ion

What is the radius of the hydride $(\ce{H-})$ ion? There are several sources with conflicting reports on the same. Inorganic Chemistry: Principles of structure and Reactivity cites Pauling’s 1960 ...
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Trends in solubility of group 2 nitrates

In my lab report, we are required to explain the trends in solubility of group 2 salts, going down the group. I had explained all of the trends except one, group 2 nitrates. The following is the data ...
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how to separate a mixture of sodium chloride and sodium hydroxide

I recently did an double displacement reaction in that I have formed a solution of water with sodium hydroxide and sodium chloride are dissolved in it. now I want to separate both of them
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Why is it difficult to measure the pH of environmental water samples accurately (near 7)?

I've read in several places (edit: 1, 2, 3, 4, 5, 6, 7, 8. 9, 10, 11, 12) that there are many practical factors that make accurate pH measurements of roughly neutral environmental water samples more ...
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Oxygen generator, heat driven, from air

What chemical can be used to absorb $\ce{O2}$ from the air at normal temperature and pressure, then release the $\ce{O2}$ at normal pressure and elevated temperature, below $\pu{900 ^\circ C}$ ($\pu{...
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Order of Lewis acid character among sulfur hexafluoride, sulfur tetrafluoride and tetrachloromethane

Problem Compare the order of Lewis acid character of $\ce{SF6},$ $\ce{SF4}$ and $\ce{CCl4}.$ My attempt Oxidation state of $\ce{S}$ in $\ce{SF6}$ is $+6,$ so it is very electrophilic. $\ce{S}$ has a ...
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hybridization using Ligand field theory [closed]

Determine the hybridization of the metal centre in the complexes below using Ligand Field Theory. [RhCl3(OH)3]3- [Cr(en)2(PMe3)2]
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How to determine what covalent compound a substance is?

I have been given a substance which is unknown in my class. The substance is white in colour and is in a powder form. I have conducted a few tests and have found out that the substance is a covalent ...
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Why does B12H12 Borane not exist?

Whenever I searched "$\ce{B12H12}$ Borane", I can't seem to find anything, and get met with only the dianion of $\ce{B12H12}$. Why doesn't $\ce{B12H12}$ exist on its own?
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Why does ozone, being heavier than air, not settle down?

Is this because of some equilibrium between diffusion and gravity ? What exactly is responsible?
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Chloroantimonic vs fluoroantimonic acid

Does chloroantimonic acid exists? What do we get when we mix hydrochloric acid and antimony pentachloride and is the mixture stronger or weaker than fluoriantimonic acid. How about bromo and ...
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Inorganic question [closed]

How to determine Q10 and Q11,thanks. Q11 I figured out that it will be just like trigonal bipyramid.But there will be another trigonal plane in the same plane.So another ligand opposite to position 2. ...
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Software for determining symmetry elements and point group of drawn molecules

The title represents my overall question. I would like to have a software that able to draw molecules (especially coordination complexes) and determine the symmetry elements and point group of the ...
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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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Energy levels of combined orbitals

I saw the MO diagram for a NH3 molecule but couldn't understand why the combined atomic orbitals were in the positions they were, and if these positions were fixed. Why is the sigma anti bonding ...
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What is ignition temperature of bulk strontium in air?

I want to melt strontium into a 1” thick brick shape. I have made the steel 2”x6” steel mold. I am wondering, will it ignite before it melts? (1431F but I was planning to get it up to like 1500F as ...
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1answer
55 views

Why is HgI2 a colored complex?

Why is $\ce{HgI2}$ a colored complex it has fully filled d-orbits. According to the book, one which has fully filled d-orbital has no color in transition elements. So, why is this compound colored?
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Moles question that I need help on pls [closed]

So the question is: o.o497g of a chloride of a group 1 metal called Z is dissolved on water, Excess acidified silver nitrate solution is added to the solution. The resulting precipitate is filtered ...
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How is [AlF6]3- formed? [closed]

So I was just looking at the orbitals and expanded octet concepts of Al. And I'm not able to understand how Al uses the d orbitals to form this compound... Could someone explain this to me using the ...
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1answer
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How to find the oxidation number of Co and Cr in [Co(NH3)6] [Cr(C2O4)3]?

In the question I actually got I had to name the above compound, and I know how to name it but I don't know how to find the oxidation number of the above compound(which has to be mentioned in the ...
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1answer
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Why does this formula work?

My teacher gave us a formula for determining if a M-O-H like compound will act like a base or not.without explaining much. Base if:$$|\chi_o-\chi_M|\gt|\chi_o-\chi_H|$$ Flipped inequality if acid. I ...
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Potassium chlorate from potassium chloride and hydrogen peroxide

Why can't you make potassium chlorate using the chloride anion from the potassium chloride and having oxygen bond with it from hydrogen peroxide?
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Write the reducible representation of TiCl6 3- [closed]

Write the reducible representation for 4 cl in the equatorial position and 2 cl in the axial position separately. I am not sure how to do this seperately. Please help
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63 views

Salt analysis of Ag salts

So I was doing analysis of Ag salts and I found Agbr is curry white partially soluble in ammonia , AgI is yellowish and insoluble . BUT silver phosphate is also yellow . So can anyone tell whether or ...
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A question about inorganic chemistry [closed]

I tried to use many methods to solve this problem, but encountered a lot of difficulties, I would like to ask you how to solve this problem better, thank you
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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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Driving force of Galvanic cell

Work can be extracted from galvanic cell which has a negative Gibb's free energy. I was wondering what is the driving force of it: I would naturally think its the Gibb's free energy, but the gaps ...
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1answer
195 views

Electride salt preparation

In preparation for the Birch reduction, I am trying to prepare an electride salt, $\ce{[Na(NH3)6]+, e-}.$ This salt should be brilliant blue, as far as I know, but I am getting a black sludge when ...
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Why Ammonium bifluoride is used in the iodometric estimation of copper in brass?

When brass solution (mixed with nitric acid and urea) is to be estimated for amount of copper present, ammonia is added to neutralize the solution. This gives a turbidity which can be dissolve by ...
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1answer
273 views

Why my boiling pot turned black?

Recently I ran out of dish washing detergent, so I decided to pick up one of the recipes online, to make my own "ecological" dish washing detergent alternative. The recipe was: Mix ingredients: ...
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Which metal bicarbonates do not exist in solid state?

$$\ce{(i) LiHCO_3 (ii) Ca(HCO_3)_2 ​ (iii) Zn(HCO_3)_2 ​ (iv) AgHCO_3}$$ From my prior knowledge compounds i and ii are not solids because of the high hydration energy of Li and the ...
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1answer
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Homemade “milk of magnesia” (suspension of magnesium hydroxide in water)

I want to make homemade "milk of magnesia" as a suspension containing only magnesium hydroxide and water. I see that I can purchase a bag of magnesium hydroxide powder. Can I use this to ...
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AlCl3(aq) reaction with NaHCO₃ to form alumina Al2O3

In a demonstration, aluminum foil was add to a solution of $\ce{HCl}$ and allowed to react, the reaction was presented as $\ce{2Al(s) + 6HCl(aq) -> 2Al­Cl3(aq) + 3H2(g)↑}$ After filtration, the ...
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Differences in using molten NaCl compared to aq. NaCl in a galvanic cell having copper anode and cathode

Since we know that copper anode will release $\ce{Cu^2+}$ ion, so I was wondering whether the cathode will thicken as copper has a lower position on the electrochemical series. Based on my research, I ...
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1answer
43 views

Is iron(iii) hydroxide equivalent to hydrated iron(iii) oxide? [duplicate]

Are the chemicals $\ce{Fe(OH)3}$ and $\ce{Fe2O3⋅3H2O}$ equivalent? They are both network solids and have the same empirical formula but I know that doesn't always mean they are structurally the same.
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Extracting other mineral from salt in evaporated seawater

I recently stumbled upon this news: Seawater contains 47 minerals and metals. Starting with the most abundant and proceeding to the least abundant, these are chloride, with a concentration of $\pu{18 ...
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Why isn't osmium ferromagnetic?

When I am studying magnetic properties in IB Chemistry, what particularly puzzles me is ferromagnetism. In my textbook, what accounts for paramagnetism in transition metals is unpaired electrons in ...
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Thermal properties of aluminium alloy 6063

I am looking for the operating temperature range both in a cold and hot environments (minimum and maximum operating temperatures) for aluminium alloy 6063. I'm new to finding this kind of information ...
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Why is acid added to water and not vice versa for dilution? [duplicate]

what makes the process of addition of water to acid so exothermic that it becomes explosive, and why adding acid to water is lesser exothermic?
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Why is boron inert to acids and bases? [duplicate]

I was reading my school text book and in the segment related to the reactivity of group 13 elements with acids and alkalis it was written: Boron does not react with acids and alkalis even at moderate ...
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Hydrolysis of Magnesium Carbide

I came across a question in which the following reaction was taking place: $$ \ce{Mg4C3 + H2O -> CH3CH \bond{#} CH} $$ Each $\ce{Mg}$ atom must be present in a +2 oxidation state, thus the total ...
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1answer
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Basic behavior of ammonia in aqueous medium [closed]

Thanks to the reversible reaction $$\ce{NH3 + H2O <=> NH4+ + OH-},\tag{R1}$$ we know that ammonia acts as a weak base. However, I was wondering why it ends up forming ammonium $\ce{NH4+}$ and ...
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2answers
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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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