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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Finding initial amount of ammonia using equilibrium constant and amount of nitrogen gas
Question
When an amount ammonia is added at $\pu{600 K}$ in a $\pu{1 L}$ container the following reaction takes place:
$$\ce{N2(g) + 3 H2(g) <=> 2 NH3(g)}$$
The equilibrium constant ...
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Is it correct to assume that by multiplying concentration with molar mass, I can calculate the number of grams in a solution?
I was wondering, if I am given a solution of NaCl (for exmaple) and I know how much it weighs (lets say 1000 g for the sake of argument), can I calculate how much NaCl there is in that solution by ...
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Count of shared oxygens between tetrahedrons in $\ce{Si3O9^{6-}}$
Question:
What is the number of oxygen atoms which are shared between tetrahedrons in $\ce{Si3O9^{6-}}$?
I know that silicates have the general formula,
$$\ce{SiO^{z-4}_{4-z/2}}$$
where z is count ...
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Oxygen analogue of benzene [duplicate]
Cyclic ozone is theoretically possible although it has been found in some cases, so is a six-membered oxygen ring (oxygen analogue of benzene) theoretically possible too?
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Chemical change - decomposing single element?
If I had a molecule of a single element such as atmospheric oxygen O2, and I added energy to decompose it into two separate oxygen atoms (i.e. O2 + ENERGY –– 2 O ) is this a chemical or physical ...
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Reaction between halogens and concentrated nitric acid
I have read that the reaction between $\ce{I2}$ and conc. $\ce{HNO3}$ gives $\ce{HIO3}$ and $\ce{NO2},$ but there is no mention of the other halogens' products. Do they all give halous acids and ...
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CN-1 and CO are pi acceptor ligands how they bond with metal atom and how they differ from each other? [closed]
explanation with MOT diagram that how both CN-1 and CO form complexes with transition metals.
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Why is acetate a monodentate ligand?
Why is the acetate ion considered a monodentate ligand as opposed to a bidentate ligand considering both oxygen atoms can donate their respective lone pair of electrons?
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Reaction of hydrogen peroxide with sodium carbonate [closed]
In my book the following acid base reaction is written:
$$\ce{H2O2 + Na2CO3 -> Na2O2 + H2O + CO2}$$
But I found that the $\mathrm{p}K_\mathrm{a}$ value of $\ce{H2CO3}$ is less than the one for $\...
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Why does silver stick to the glass in Tollens' test? [duplicate]
Why does it not simply form a solid powder at the bottom of the flask?
Does silver also stick to the glass in other silver precipitating reactions?
EDIT:
My question is definitely not the same as ...
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What is the state of aggregation of iodine formed during electrolysis of molten nickel(II) iodide? [closed]
Assume the electrolysis of molten $\ce{NiI2(l)}$ (inert electrodes) in a cell. The cell with a heating element is in the room; the room is at $\pu{25 °C}$ and $\pu{101.3 kPa}.$
The half-reaction for ...
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Why does nitrous oxide react with bases and it is still a neutral oxide? [closed]
I have studied that N2O is a neutral oxide in my textbook(recommended by the central board of secondary education INDIA(country)). on internet and in my class notes i find its balanced reaction with ...
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How to calculate mass of calcium fluoride that will dissolve in sodium fluoride solution?
The solubility product of calcium fluoride, $\ce{CaF2},$ is $\pu{1.46E-10 mol^3 dm^{-9}.}$
What mass of calcium fluoride will dissolve in $\pu{500 cm^3}$ of $\pu{0.10 mol dm^{-3}}$ sodium ...
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Does sanding the oxide layer of a magnesium sample break bonds?
We all know that if we keep a piece of magnesium metal exposed in open air, an oxide layer forms on it. This layer prevents further oxidation of the bulk metal. If we then rub it with sand paper, the ...
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Honey moisture and increase in temperature? [closed]
I've been interested quite lately on how moisture would be affected as the temperature increases. My experiment methodology is that I will be manipulating temperatures of the honey between 20,40,60,80 ...
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Why percent concentration in this example is equal 5.07%? [closed]
I got problem with this one: 0.6 g of sodium was added to $20cm^{3}$ of water. Calculate percent concentration of this solution.
Answer: Cp is equal 5.07%
Could someone tell me how it is possible? ...
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i need to find a compound/material/fibre which is fire resistant (atleast 500 °C or or 1000 F), washable and cheap [closed]
I'm a High school student in a commerce stream, i.e. I've no relation whatsoever to chemistry (or science for that matter). I've been studying inorganic chemistry for the past 9 months as a personal ...
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Structural isomers of hexaammineiron(III) hexacyanidocobaltate(III)
Find the number of structural isomers of $\ce{[Fe(NH_3)_6][Co(CN)_6]}$
This was a question solved by my teacher as follows:
The $\ce{CN}$ will show linkage isomerism while $\ce{NH_3}$ and $\ce{CN}$ ...
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1answer
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Acidity order of xenon fluorides,oxides and oxofluorides [closed]
The acidity order of xenon oxides,fluorides and oxofluorides is:
$\ce{XeF6 > XeO2F4 > XeO3F2 > XeO4 > XeOF4 > XeF4 > XeO2F2 > XeF3 > XeO3}$.
How to justify this order?
My ...
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What is the electron configuration of VO^2+ and VO3^1-? How do you determine the valence of vanadium in VO3^1- and VO^2+ [closed]
I am getting confused about how to go along with this so can someone please explain the process to figure this out as soon as possible :( Thank you! Also I was figured out that the oxidation number of ...
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Qualitative Analysis- Distinguishing between two ions or two salts [duplicate]
I know my question is going to be quite below the level of this site but I am 1st grade in university and I can't understand anything.
I am going to give an example from the book: distinguish ...
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How to identify if a material is perovskite or not?
This is more of a materials science question, but I believe many of you have referred NIST Inorganic Crystal Structure Database (ICSD) database.
I am collecting a database of perovskite materials and ...
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How the attraction takes place between a hydrogen atom and the acceptor atom in a hydrogen bond
In hydrogen bonds present in water,does the hydrogen atom attracts to the lone pair of electrons present on the oxygen atom or to its partial negative charge? If former is the case are there any ...
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How does Aluminum react with nitric acid at different concentrations? [duplicate]
I am unable to find proper information. My book just says that conc. Nitric acid renders it passive.Could anyone please give the different reactions at different concentrations
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Contradictory Properties of Mercuric Cyanide [closed]
It is said that mercuric cyanide [$\ce{Hg(CN)_2}$] is water soluble and also is a non-electrolyte.
How is this possible?
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Naming of [Pt(py)4][PtCl4]
Why is $\ce{[Pt(py)4][PtCl4]}$ called tetrakis(pyridine)platinum(II) tetrachloridoplatinate(II) and not tetrapyridineplatinum(II) tetrachloridoplatinate(II)?
I thought you use tetrakis for ligands ...
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Reactions of diborane, silane, methane, aluminium, boron, sodium, phosphorus trichloride, white phosphorus and iron with water at RT [closed]
How many of the following will evolve $\ce{H2}$ gas when dissolved in water under room conditions?
$\ce{B2H6},$ $\ce{SiH4},$ $\ce{CH4},$ $\ce{Al},$ $\ce{B},$ $\ce{Na},$ $\ce{PCl3},$ $\ce{P(white)}...
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Exothermic dissolution
When I was learning about salts that show exothermic dissolution, I noticed that the same salts used in Daniel Cell( due to similarity of size of anion and cation) were undergoing exothermic ...
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Calculating the biological standard potential
I have an electrochemical cell with following overall reaction:
$$\ce{5 Sn^4+ + 2 Mn^2+ + 8 H2O <=> 5 Sn^2+ + 2 MnO4- + 16 H+}$$
I have defined the half reactions as:
$$
\begin{align}
\ce{Sn^...
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Can PDMS silicone be produced with dichloromethane?
I was taking a simulated admission test for a Technology Institute (Brazilian ITA) and one of the questions asked for the production of PDMS silicone via these described steps:
Reaction of $\ce{SiO2}$...
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How to keep Cu+ in an aqueous solution? [closed]
Explain your solution please
Tell me how to keep cu+ stable in an aqueous solution
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What is the naming convention for Sn and Pb in inter-metallic compounds?
A hopefully quick question here:
How would one go about naming inter-metallic (specifically Transition Post-transition) compounds containing tin and lead?
It is usually easy figuring out the naming ...
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Why can't ligands with “locked structures” undergo chelation?
The following quote is from the book Concise Inorganic Chemistry by J.D. Lee (Adapted by Sudarsan Guha), from the chapter "Coordination Compounds", page 177:
...it must be noted that $\ce{NH2NH2}$ ...
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What is the meaning of the J value in term symbols [closed]
I understand how to work out the J values of term symbols.
e.g. a d1 configuration gives J values of 5/2 and 3/2. resulting in 2D 3/2
However I dont understand the meaning of it, and why it arises.
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Why is chromate stable in basic medium and dichromate stable in acidic medium?
When I was studying the equilibrium existing between chromate and dichromate ions in the solution, I came to know that
Chromate ion is more stable in basic medium while dichromate ion is stable in ...
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Has anyone actually prepared Zn(HCO3)2 absent the presence of pressurized aqueous CO2?
Under normal conditions, I am not certain, as per Atomistry on $\ce{ZnCO3}$, the following quote:
The hemihydrate, $\ce{2ZnCO3.H2O}$, was obtained by precipitating the solution of a zinc salt with ...
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How to draw isomers of [CrCl3(H2O)3]? [closed]
How do you draw isomers? I am trying to figure out how to draw $\ce{[CrCl3(H2O)3]}$ and label it, but I do not understand.
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How to find the oxidation numbers of individual ions of a transition metal with an average fractional oxidation state
In the classical example compound of $\ce{Fe3O4}$, we know that $\frac 23$ of Fe ions display +3 oxidation state and $\frac 13$ of Fe ions display +2 oxidation state fulfilling charge neutrality ...
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Is carbon–sodium bond mainly ionic or covalent?
We all know that carbon mostly forms covalent bonds (almost always) and sodium mostly forms ionic bonds (almost always). But if $\ce{NaOH}$ reacts with ethyne, then $\ce{HC#CNa}$ and $\ce{H2O}$ are ...
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How come we can't use the equivalence point equation of NV=NV in this problem?
So, the problem is you prepare to standardize a $\ce{Na2S2O3}$ solution. $\pu{32 mL}$ of $\ce{Na2S2O3}$ solution is titrated into $\pu{50 mL}$ of a $\pu{0.01 M} \ \ce{KIO3}$ solution to reach the ...
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Which is a dye: Ferric Acetate or Ferrous Acetate?
I’ve been trying to make Iron Acetate to dye leather and I cannot, for the life of me, figure this out experimentally.
I’ve been allowing steel wool to react with pure white vinegar in a sealed glass ...
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magnetite high spin or low spin [closed]
I have a homework question which asks the following:
The mineral magnetite has the formula Fe3O4 and has an inverse spinel structure. In the unit cell, there are 2 Fe ions in octahedral sites and 1 in ...
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Why is the crystal field splitting energy larger for square planar than octahedral complexes?
I recently came across a fact that for the same combination of metal and ligand, the crystal field splitting energy for square planar complexes is larger than that of the corresponding octahedral ...
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Is silicon dioxide decomposition possible?
I was thinking about this, I made Gibbs free energy calculations and I can't figure out if
$$\ce{SiO2(s) -> Si(s) + O2(g)}$$
is actually possible, even at a ridiculous high temperature.
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Why is dinitrogen tetroxide a planar molecule?
Why is $\ce{N2O4}$ a planar species in spite of having a σ-bond in between two $\ce{N}$ atoms for free rotation?
Does it not form a conformer?
Any clarification would be appreciated.
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316 stainless steel and high concentration, high temperature Hydrogen Peroxide
I'm looking at doing some experiments with small scale rocketry and I need to find the right materials for this project, where I will be burning through lots of HTC (peroxide above 90% concentration). ...
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Dissolving hydrated vs non-hydrated salts
in chemical catalogs, salts are often sold in hydrated and non-hydrated versions. Like sodium sulfate anhydrous and sodium sulfate decahydrate. I tried dissolving the anhydrous and it didn't ...
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What is the structure of XeF6? [duplicate]
Doubt
I searched the net and found the following result:
But why is the lone pair placed in equitorial? Shouldn't it be placed in axial?
Afterall equitorial bond angle is 72° while axial is 90°.
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Does it make sense to have a control group for a school chemistry experiment?
I'm wondering if it makes sense to have a control group for the following experiment:
measure the speed of gas produced when hydrochloric acid and calcium carbonate react, as a function of surface ...
