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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Search for the last step of an altered Raschig process reaction mechanism

The Raschig process (according to the german wikipedia) is divided in the following steps: $\ce{2NaOH + Cl2 -> NaOCl + NaCl + H2O}$ $\ce{NaOCl + H2O -> HOCl + NaOH}$ $\ce{HClO + NH3 -> ...
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0answers
24 views

Shapes of ionic compound

Can anyone explain the shapes of ionic compounds? What does it mean? What does the coordinate number mean? I know that in $\ce{NaCl}$, one $\ce{Na}$ atom is surrounded by 6 $\ce{Cl}$ atoms, and vice ...
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28 views

How to prepare vitreous flakes of Boric acid?

Can anyone please tell me how to prepare vitreous slippery flakes of Boric acid (exactly like in the pic)?
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0answers
46 views

Need to know how to use the periodic table [closed]

Can't use the periodic table... Also need to know about it in depth.
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0answers
25 views

Why is the crystal size in dentin smaller than that of enamel?

Why are the crystals smaller and therefore a smaller surface area. From article : "Dentine and enamel have similar mineral compositions, although the carbonate content is much higher in dentine. The ...
2
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1answer
40 views

Formation of magnesium bismuthide

Magnesium shows an oxidation state of $+2$ and bismuth shows an oxidation state of $+3$. Both do not show a negative oxidation state. Then how is magnesium bismuthide ($\ce{Mg_{3}Bi_{2}}$) formed?
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26 views

How to find the structure of certain molecules? [closed]

There are some molecules like, carbonate ion, carbon monoxide, oxides of nitrogen etc. for which finding the structure seems very difficult and confusing. Please tell me a way to do so in simple and a ...
1
vote
1answer
25 views

Is NaCl in water considered “solution” despite of NaCl's having some precipitation?

Is $\ce{NaCl}$ in water aqueous? For a certain amount of $\ce{NaCl}$, it can dissolve in water but if you add more $\ce{NaCl}$ it can't dissolve any more. So, if in a certain reaction $\ce{NaCl}$ is ...
3
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1answer
33 views

Empirical and molecular formula

I was doing a homework assignment and I got the following question wrong because I was supposed to multiply the empirical formula by 3 to get the molecular formula of $\ce{C6H10S2O}$. I put ...
-1
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0answers
13 views

calculate density [closed]

Data from the mass (in grams) and volume (in mL) of an unknown liquid is plotted as mass (y-axis) as a function volume (x-axis). The resulting Excel trendline was given as: $y = 0.8122 x + 0.0444$ ...
-1
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1answer
51 views

Why is cupric oxide green?

Cupric oxide is black, but when we find the percentage of oxygen in air by volume using ammonia, copper, and ammonium chloride, the color of $\ce{CuO}$ turns green. What is the reason for this? I'm ...
7
votes
1answer
110 views

Hydration number: Carbonic acid in water

Carbonic acid ($\ce{H2CO3}$) is known to be soluble in water, and that this particular compound is unstable, so much so that according to the 2014 article from Berkeley Lab: New Insights on Carbonic ...
2
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65 views

How to rationalise the notation for formulae with variable amounts of a species?

The simplified formula for calcium-deficient carbonated hydroxyapatite is:$$\ce{Ca_{$10-x$}Na_{$x$}(PO4)_{$6-y$}(CO3)_{$z$}(OH)_{$2-u$}F_{$u$}}$$ The perfect formula is:$$\ce{Ca10(PO4)6(OH)2}$$ So ...
0
votes
2answers
52 views

I need Iron powder. What's the best way to produce it?

I have Ferric Chloride and Aluminum... I also have steel filings from grinding steel objects, though some Iron Oxide have be separated (I do have Oxalic Acid and Citric Acid). Though that would give ...
4
votes
1answer
29 views

Pauling's equation on the relationship between Electronegativity and Percentage Ionic Character

In Paulings eqn: $$ \%~\ce{ionic~character} = \left[ 1−e^{−(Δχ/2)^2}\right] \times 100$$ What is $e$? I for the love of me can't find it anywhere
3
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1answer
17 views

How does Ammonia and water mixture works in an absorption refrigeration?

As per one of the questions in this site $$\ce{NH3 + H2O -> NH4 + OH}$$ However, per another perspective in absorption refrigeration The mixture is placed in the same container. Then when it ...
3
votes
2answers
62 views

How do I setup the electrodes for cyclic voltammetry on a capacitor made on dry copper sheets?

I'm trying to measure capacitance of a cell I'm creating. It's composed of two copper-sheets with nano-material coated on one side, sandwiched with a membrane and wetted with $\ce{KOH}$. All of the ...
2
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0answers
30 views

Calculating yield percentage of magnetite synthesis

I’ve made magnetite $\ce{Fe3O4}$ in the lab and now I need to calculate yield percentage. How can I do it? I have these data. \begin{align} \ce{FeSO4.7H2O(aq) &-> Fe^2+(aq) + SO4^2- (aq) + ...
5
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2answers
68 views

Can negative (abnormally) lattice enthalpies during the formation of ionic compounds exist?

Why do compounds form bonds? I've got three words for you: Less potential energy. I don't remember a case of positive lattice enthalpies $\ldots$ - My comment This makes me wonder. I remember ...
2
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1answer
57 views

About combining a cation and an anion

I’m trying to learn about ions. There is a slide with examples about combining cations with anions. It goes like this: $$\text{For} \ \ \ce{Al^3+} \ \ \text{ and } \ \ \ce{O^2-} \ \ \text{you get} ...
5
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0answers
28 views

Can I make Ferrofluid without evaporating Ammonium?

I want to make ferrofluid, which is ferromagnetic particles suspended in a carrier fluid. Three methods I have seen involve using magnetic ink (for MICR codes), cassette tapes, or ferric chloride as ...
3
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2answers
34 views

If alloys are homogeneous mixtures, why can't we separate their components?

An alloy is a material composed of two or more metals or a metal and a nonmetal. And, they are usually formed by heating the elements to their melting points, and then cooling them, so that the ...
5
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0answers
41 views

Trans effect on square planar complex

We've learnt about the trans effect but I have a question regarding how this plays a role with water in the equation. trans-effect: $$\ce{H2O < NH3 < Cl2}$$ Based on this, given ...
4
votes
2answers
180 views

What is the order of the reaction with respect to NO?

According to a question on my book, The following reaction mechanism has been proposed for the reaction of $\ce{NO}$ with $\ce{Br2}$ to form $\ce{NOBr}$ $$\ce{NO(g) + Br2(g)<=>NOBr2(g)}$$ ...
5
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1answer
138 views

Why is H2S2O7 stronger than H2SO4?

I think sulphuric acid will be the correct answer. I can't find answer. Please show your reasons. My attempt: I've read that, for an oxi-acid, the oxidising number of the central atom shows the ...
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1answer
48 views

For the half reaction HSO3- -> S2O6^2- why is it that 2e- are on the right hand side when balancing and not one electron?

$$\ce{HSO3- -> S2O6^2-}$$ The oxidation number of $\ce{S}$ on the left is +4 and +5 so when adding electrons to balance the oxidation number why is $\ce{2e-}$ added to the right instead of one? ...
2
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0answers
36 views

What does boiling point of a metal depend on, specifically manganese?

Boiling point, as I understand, generally depends on molar mass and the intermolecular interactions in the liquid phase. What are the other influencing factors? What intermolecular forces are ...
4
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2answers
190 views

Why is CaO + SO2 --> CaSO3 not a combination redox reaction?

I understand that a combination reaction is one where two substances combine to form a third substance, like with $\ce{2Na + Cl2 -> 2NaCl}$ but I do not understand why $\ce{CaO + SO2 -> CaSO3}$ ...
0
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0answers
60 views

Lead and tin with conc. nitiric and hydrochloric acid

Does tin and lead react with concentrated nitric and hydrochloric acid? I'm in kind of have got two completely opposing views on this from my classes and books I refer.
3
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0answers
28 views

Strength and magnetic charge of KNO3

A homework question asks for physical properties of potassium nitrate, and specifically asks for magnetic charge and strength (that is how it is phrased). I have properties such as white in color, ...
5
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1answer
77 views

What's the bonding in the diborane(6)- hydrogen chloride dimer?

I was researching and Googling and researching again, about this very interesting molecule: Diborane. Then I faced a very interesting structure, something that I have never seen before. Something ...
4
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2answers
121 views

Is ClH7 possible? [duplicate]

Chlorine can be $sp^3d^3$ hybridized. If so, it can form $\ce{ClH_7}$ and then chlorine, being more electronegative, will have (-7) as its oxidation number. But we know that the oxidation number of ...
4
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1answer
68 views

Why does magnesium have an exceptionally low melting point?

Why does magnesium have a lower melting point than both calcium and beryllium? It does not seem to fit into the group trend.
4
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1answer
35 views

How does the MG811 sensor work?

The MG811 is an electrochemical sensor that measures $\ce{CO2}$. I think is something like a redox reaction but i don't understant how it produces $\ce{e-}$ so i can read them and get the $\ce{CO2}$ ...
3
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1answer
48 views

Initial rate of reaction from the graph?

#13 , I tried finding the slope between two points but I keep getting wrong values, how do you find the initial rate? So I started by trying to find a slope of two points. (0,0.4) and (10,0.2) after ...
2
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1answer
56 views

Lead compounds enthalpy homework

Consider the following: $\ce{PbS(s) + \frac{3}{2}O2(g) -> PbO(s) + SO2(g)}~~~\Delta H^\circ= -413.7~\mathrm{kJ}$ $\ce{PbO(s) + C(s) -> Pb(s) + CO(g)}~~~\Delta H^\circ = +106.8~\mathrm{kJ}$ a. ...
7
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1answer
103 views

Diagonal relationships in the Periodic Table

I have often wondered about diagonal relationships between elements on the periodic table, and the most often cited explanations revolve around charge-density considerations. But other than that, ...
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34 views

Identifying Alkyl Ligands as Pi Donors or Pi Acceptors in Transition Metal Complexes

Just wondering if there was a systematic way to identify an alkyl ligand as a $\pi$ acceptor or $\pi$ donor in a transition metal complex? Although various sources indicate that weak field ligands ...
5
votes
2answers
136 views

How will the equilibrium partial pressure of carbon dioxide be affected?

\begin{equation}\ce{CaCO3(s) -> CaO(s) + CO2(g)}\quad\Delta H^\circ = +556\ \mathrm{kJ/mol} \tag{endothermic}\end{equation} How will the equilibrium partial pressure of $\ce{CO2}$ be affected if ...
4
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0answers
42 views

What's the solid product of the reaction of ammonia with sulfur?

In one of my chemistry revision papers,there was a question saying What would happen when you mix liquid $\ce{NH3}$ and excess of sulphur? They say a solid with $\ce{N}$ and $\ce{S}$ and a gas ...
4
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0answers
45 views

Methylation of perchlorate

I am exploring (non-experimentally!) the methylation of a perchlorate precursor, either the acid or pre-existing salts, to produce the alkali methyl perchlorate. The methylating agent would be methane ...
2
votes
1answer
44 views

What significance and applications does nanotechnology have in chemistry? [closed]

Specifically concerning organic chemistry, but an explanation on its significance and applications in inorganic chemistry would be great as well.
4
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1answer
56 views

Gallium-induced structural failure of aluminium

I have seen youtube videos of people treating some aluminium object with liquid gallium and after letting it sit for a while, they are able to break up the aluminium into tiny little pieces with their ...
4
votes
1answer
32 views

Electroless Plating of Zinc onto Copper in NaOH Solution

I’m researching how the classic “alchemy” demonstration works in which zinc is plated onto a copper penny in a solution of sodium hydroxide. Most online resources refer to the electroplating of copper ...
2
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0answers
44 views

How to find the standard enthalpy and entropy for the dissolution of silver chloride?

A maximum of $1.89~\mathrm{mg}$ of $\ce{AgCl}$ will dissolve in $1.00~\mathrm{L}$ of solution at $25.00~^\circ\mathrm{C}$. A maximum of $5.26~\mathrm{mg}$ of $\ce{AgCl}$ will dissolve in ...
9
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3answers
190 views

Industrial synthesis of hydrazine

Not a duplicate of Hydrazine synthesis - I know what hydrazine is and am not going near it voluntarily! Looked at this resource on the Internet which cites three major commercial-scale processes: ...
2
votes
1answer
41 views

Are all complexes with a polydentate ligand examples of chelation?

I'm getting a little confused about the definition of chelation and its implications (I should probably point out I'm only an A2 Chemistry student). The IUPAC defines chelation as the following: ...
4
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0answers
43 views

Does oxygen ever explode?

I know that oxidanes are oxygen chains and rings. For example trioxidane is $\ce{HO-O-OH}$. I can see this turning into $\ce{O2}$ and $\ce{H2O}$ like hydrogen peroxide does. Since the double bonds in ...
5
votes
1answer
71 views

tricky galvanic cell problem

A galvanic cell consists of a standard hydrogen electrode and a copper electrode. Suppose that the copper electrode is immersed in a solution that is $0.100\ \mathrm{M}$ in $\ce{NaOH}$ and ...
3
votes
1answer
43 views

Action of HCl on PbS

I was wondering if it would be possible to use $\ce{HCl}$ acid to dissolve $\ce{PbS}$. I know that I can dissolve it in $\ce{HNO_3}$ since, the nitric acid oxidises the sulphide ion to elemental ...