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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What happens in reaction of Lead and concentrated Nitric Acid?

I have two oppsing information, one that it forms a protective layer of $\ce{PbO}$ and doesn't reacts,other that it forms lead nitrate.Can someone clarify. NB the acid is cc.
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1answer
11 views

A dehydrating agent acting as an hydrating agent?

We know that $\ce{P4O10}$ is a dehydrating reagent and I might list on 100's of reaction of it's dehydrating nature, mainly orgainc elimination reaction and few inorganic oxoacid dehydrations, but it ...
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0answers
5 views

Missing reaction mechanism link?

The following reaction scheme can be easily explained by the help of mechanisms but one link is missing, so I wish if someone would help by proposing one or by providing an already proposed ...
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1answer
26 views

Why don't unstable odd electron species dimerize so that they become stable?

Why doesn't unstable odd electron compund $\ce{NO}$ dimerize to $\ce{N2O4}$?Why doesn't this structure of ozonide dimerize?But why then $\ce{BH3}$ dimerizes to $\ce{B2H6}$, and $\ce{AlCl3}$ to ...
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1answer
8 views

Controversy over products of iodate and bisulfite?

We know that when we are trying to recognize iodate, we use sodium bisulphite to the solution and with the help of starch paper recognize the evolved $\ce{I2}$.But when I studied the books I found ...
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1answer
22 views

What is the structure of Cl₂O₆?

I couldn't find which of these is correct and even someone I asked said there's no general covincement on it, but I'm unsure whether he's correct? I reproduced the second structure a little wrong ...
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0answers
14 views

Irony? Sulphur, Is +6 really the stablest form?

I think everyone might be aware that +6 is considered the stablest form of sulphur.But I think why this reaction happens very slowly and at such a high temperature and even the help of a catalyst is ...
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0answers
13 views

crystal lattice [on hold]

How is it possible to design a 2d crystalline lattice with infinite length approximation (approximately finite length = equivalently infinte long) solving fourier transform, such that even though when ...
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0answers
19 views

Chemical reactions in terms of mass of compounds [on hold]

Please see the image for the question which asks what kg of the reacting compounds will be consumed as per the given reaction to produce a target kg of output. How to solve these kinds of questions ...
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0answers
12 views

Moles calculation in mixed oxides of metal [on hold]

A metal M can exist in two oxidation states (+2 and +4) in which it forms two oxides. In a mixed oxide of metal, both oxidation states of the metal are present. Need to determine which of the options ...
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1answer
26 views

Elasticity of latex

Latex is a natural resources and the elasticity can be increased by heating it with sulphur. My question is why they are different elasticity of latex? I mean like rubber gloves have a good elasticity ...
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0answers
8 views

Is hydrated calcium silicate a good anticaking agent?

I work in a salt production factory and I want to make a purchase for hydrated calcium silicate as an anticaking agent for salt. Is it a good anticaking agent for salt and what is the perfect ...
2
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0answers
27 views

Density of Ni vs Cu using unit cell

How might one determine whether Ni is more dense than Cu using only the atomic masses of Ni and Cu, and the fact that Ni has a simple cubic unit cell, and Cu has a face-centered unit cell. You are not ...
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0answers
12 views

Thermal stability of barium peroxide and barium oxide

why is barium peroxide more thermally unstable than barium monoxide Do I answer it based on the bonding and structure?
3
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1answer
40 views

stone which turns to black on exposing to atmosphere?

My mom is using a stone like substance as a dye for hair recommended by a herbalist. That stone becomes black when exposed to air. Do you know which compound is this?
2
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1answer
23 views

Why are square planar coordination compounds with four different ligands optically inactive?

Why square planar co- ordination compounds of type Mabcd do not show optical activity, although they contain 4 different ligands ( i.e. chiral central metal atom)
2
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0answers
23 views

Why are only ozonides of heavier elements stable?

Most ozonides which are stable are of Cs, Rb, K but not of Na, Li. Why? Why they have no mention often?
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1answer
27 views

I need help with finding out how to get 2g of Lead (II) Iodide? [closed]

I need to get 2 grams of lead (II) iodide precipitate but I don't know how much lead (II) nitrate and potassium iodide I need to get that result. The balanced chemical equation is: $$\ce{Pb(NO3)2 + ...
2
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2answers
55 views

Does dissociation require energy to occur?

I assume spontaneous separation to ions of salt solution (or acid) requires energy to occur, right? Where does that energy come from? Is it from the heat of the solution? Now, if someone devised a ...
3
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1answer
38 views

Why did HF disolve this lightbulb at the surface rather than more submerged points?

I watched this video where a lightbulb is suspended in a solution of HF. The result is that the HF dissolves the glass, but it seems like the part of glass on the surface reacted faster than fully ...
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0answers
26 views

How to recrystallize boric acid into flakes?

I am putting 100g of boric acid, 400g of water and trying to crystallize at low temperature and letting cool slowly, however it recrystallizes as needle like texture. I need soft large crystals like ...
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0answers
23 views

What happens when adding swimming pool salt to a freshwater pool?

Why does adding swimming pool salt to a freshwater swimming pool cause a white sediment to build up and stick to the floor of the pool?
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1answer
27 views

Which group does germanium belong to?

$\mathrm{Z= 32}$ $\mathrm{1s^2\ 2s^2p^6\ 3s^2p^6d^{10}\ 4s^2p^2}$ According to me it belongs the $\mathrm{IV\ B}$ group since it has the $\mathrm{d}$ completed, but it belongs to $\mathrm{IV\ A}$. ...
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6answers
7k views

Do all salts taste salty?

Recently, I am learning the production of soluble and insoluble salts. My friend and I have done this experiment at the school lab. However, we want to taste them to see whether they are salty are ...
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0answers
17 views

How is the crystal direction important for etching silicon surfaces?

I am a student of masters study with a background only in electrical engineering, but I have studied millers indices and crystallographic planes and directions, personally, to help myself understand ...
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1answer
35 views

A chemical compound with these conditions?

I am searching for a chemical compound wich meets these five conditions! slightly soluble in water layered strutcture ionic conductor thermochromism lead must be a part of it. I hope someone can ...
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2answers
43 views

Do silicon dioxide react with alkaline?

In my science class, I have been taught that silica (silicon dioxide/sand) has three properties, namely It does not react with water. It does not decompose with heat. It does react with acid. ...
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2answers
28 views

Balancing Ionic and Net Ionic equations

I am currently taking a chemistry course about acids and bases. One of the things I am a bit confused about, is the acid and base neutralization reaction, and how to balance it. For Example: ...
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0answers
35 views

How to determine an unknown gas in a tube with a massless piston at equilibrium conditions?

There is a massless piston that can move freely in a horizontal tube that is closed at both ends. To the left, there is a sample of helium gas at $300~\mathrm{K}$ and $4~\mathrm{atm}$. To the ...
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0answers
28 views

Calculate the raw material margin for the dehydrogenation of 2-butene to 1,3 butadiene

Calculate the raw material margin for the dehydrogenation of 2-butene to 1,3 butadiene. The chemistry is selective and may be represented by : $\ce{C4H8 -> H2 +C4H6}$ $\ce{C4H8}$ is worth ...
3
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2answers
199 views

Experimental chemistry (Planning an experiment)

The benzyloxycarbonyl group (CBZ) is widely used to protect amines, especially in amino acid chemistry.A procedure to synthesise the CBZ derivative of glycine from glycine and benzyl chloroformate is ...
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1answer
38 views

Coloured compounds on reacting with oxygen

In the reaction of chlorine gas with water, Hydrogen chloride and nascent oxygen is produced.The reaction of any coloured substance with this nascent oxygen makes it colourless. Is it true?if yes, ...
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1answer
46 views

How can I balance the redox reaction of sulfur dioxide with oxygen?

How do I balance this reaction using half-redox equations? $$\ce{2SO2 + O2->2SO3}$$ My work is: Oxidation: $\ce{SO2 + H2O -> SO3 + 2e- + 2H+}$ Reduction: $\ce{H2O + 2e- + O2 -> SO3 + ...
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1answer
35 views

What is the difference between organosilyl, alkoxysilane and silane compounds?

What is difference between organosilyl, alkoxysilane and silanes? How do these groups make a surface hydrophobic?
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10 views

Raman Depolarization Ratio

What is the Raman depolarization ratio? What is a depolarized band, and what does it corresponds to in the structure of a molecule?
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0answers
17 views

General methods of Analysis for FTIR Results

What can we say about a molecule from the position and number of bands in FTIR spectrum. I know that the more symmetric a molecule is, the less number of bands it has. What else can we say, for ...
1
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0answers
21 views

Devising a mechanism for reaction between Aluminium and Iodine

What should be a suitable mechanism for the reaction between Aluminium and Iodine, catalysed by water? In my initial approaches, I had first thought of repeated attacks of lone pairs of oxygen in ...
4
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2answers
119 views

How do I isolate calcium from calcium carbonate?

I have the ability to use many kinds of reactions, and the use of most common acids/bases.
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0answers
39 views

Make a silver zinc battery

I have a shaver that runs off a rechargeable battery that is dying. Would it be feasible to make a silver zinc battery and use it to replace the existing battery? Cost is not an object, anything less ...
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0answers
80 views

What's the difference between normal and formal charge?

From what I know, even at the brink of completion of my highschool chemistry course, I'm not clear about it. My thinking: I know that normal charge is actually the charge due to electron transfer ...
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1answer
34 views
1
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1answer
50 views

Chemistry and mathematical modelling

I'm searching for a chemical daily life experience that can be modeled by superior mathematics so that the origin of the equations involved can be easily explained to a beginner in chemistry. By ...
2
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0answers
26 views

How to predict the type of intrinsic defect?

How do we predict the type of intrinsic defects in materials. For example what are the intrinsic defects in $\ce{HgSe}$ and $\ce{Ba3N2}$ ?
2
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1answer
24 views

Factors to consider to predict EPR

What are the factors to consider when predicting the EPR spectrum of $\ce{Cu(Ox)P(CH3)3}$ where $\ce{OX}$ is the oxalate ion? I understand that there are several factors to consider for EPR (Electron ...
1
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0answers
25 views

What are the concentrations and partial pressures in hydrogen sulfide?

I have been charged with answering the following: Please could you calculate the partial pressure of $\ce{H2S}$ at pH7, 105 bar pressure at 30 ppm $\ce{S-2}$ My attempt so far: $\ce{H2S + H2O ...
9
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0answers
81 views

CO2 removal from mushroom growing tent

I'm trying to grow oyster mushrooms that like high temperatures. They look great in an indoor terrarium, and can eventually yield several tasty meals :) However oyster mushrooms are hard to grow ...
6
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1answer
113 views

How does the radial distribution function of Vanadium differ from that of Calcium and how does this affect the ionic electron configurations?

When Vanadium is ionised it loses the 4s electron first, meaning that it's 3+ ion has a different electron configuration to Calcium despite it being isoelectronic. Can it be explained in terms of ...
0
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0answers
23 views

Using knowledge of radial distribution functions, how is it possible to explain the different electron configurations of V3+ and Calcium [duplicate]

I recognize that the 3d orbital decreases in energy to lower than the 4s once it becomes occupied (even if I don't completely understand why?!). However, how is the difference in electron ...
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0answers
19 views

Devitrification vs glass transition temperature

This graph comes from a so-called "differential thermal analysis". It is studying the effects of temperature on glass. I dont understand what the difference between "glass transition" and ...
3
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1answer
79 views

Why are all the orbitals that have the same principal number in Hydrogen degenerate?

In hydrogen, all orbitals with the same principal quantum number 'n' (1,2,3...) are degenerate, regardless of the orbital angular momentum quantum number'l' (0,1...n-1 or s,p,d..). However, in atoms ...