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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Sulphur trioxide problem

I'm having minor difficulties solving this problem: How many grams of sulfur (VI) oxide can be derived from 8 g of sulfur and 6 g of oxygen? (S-32) I've tried to solve it this way: $\ce{2S + 3O2 -...
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492 views

What's the role of sodium carbonate and hydrochloric acid for the neutralization of disaccharides into monosaccharides?

A couple of days ago we conducted the following experiment at school: Add 5mL of an aqueous solution of sucrose ($\ce{C6H22O11}$) to 1mL of concentrated hydrochloric acid and heat it for 10 minutes....
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Polyprotic acid - How does one calculate the CONCENTRATIONS of ALL species present in a solution when you start with 0.3M NaH2PO4? [duplicate]

Can anyone give me a push in the right direction, how do I calculate the concentration of all species present in a solution with 0.3M NaH2PO4. So the concentration of H3PO4, H2PO4 -, HPO4 2-, PO4 3- ...
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373 views

Inorganic reactions related to nascent hydrogen [closed]

Nascent hydrogen is prepared by (A) $\ce{Na}$ and $\ce{C2H5OH}$ (B) $\ce{Al}$ and $\ce{NaOH}$ (C) $\ce{Zn}$ and dil. $\ce{H2SO4}$ (D) All of these My attempt I know that option (A) &...
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Can other molecules than H+ cause a kind of acid reaction?

In our body there are plenty of other positive ions like $\ce{Na+, K+}$ and $\ce{Ca^2+}$. Can they have a similar acid reaction as $\ce{H+}$ ions can do? If not why is just $\ce{H+}$ considered as ...
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30 views

Can I calculate the percentage of alcohol if I only know that 100ml wheight 90,135 g [closed]

Imagine I have a bottle of 100ml which weight 90,135gr. I know that there is only water and alcohol in it. I know that the weight of water is 0,998 gr/cm3 and alcohol is 0,79 gr/cm3. And when I try to ...
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Mastering inorganic chemistry for university [duplicate]

I want book recommendations for inorganic chemistry. I want to learn it in a way that every behavior or equation of elements seems logical and can be explained. Is there any book of that sort? It ...
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Structure of IO2F5(2-) dianion

This question came in my exam to draw the Structure of $\ce{[IO_2F_5]^2-}$ I am confused. Here's what I reasoned: Iodine will have hybridisation $\ce{sp^3d^3}$ so it will be pentagonal bi ...
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277 views

The Sørensen pH scale and strong acids diltution from pH 1 to pH 4 by 1000 times?

I am reading a chemistry book that makes the following point about Sørensen's pH discovery regarding [H+] being in negative powers of 10: To dilute a solution from a pH 1 to a pH 4 (just 3 pH ...
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284 views

Why doesn't CO2 repel itself? [closed]

In a molecule like $\ce{CO2}$, the oxygens are more electronegative than the carbon, and so the electron cloud is denser around them. Then, isn't the oxygen going to be a negative dipole? The picture ...
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can anyone suggest me good chemistry video lectures [duplicate]

Can anyone please suggest me some websites from where i can get free chemistry video lectures?it must be relevant to iit jee syllabus.
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1answer
131 views

Determining the formula of tin(II) chloride hydrate [closed]

$\pu{1.20 g}$ of hydrated tin chloride decompose to form $\pu{1.01 g}$ of anhydrous tin chloride on heating. Calculate the value of $x$ given $$\ce{SnCl2.xH2O -> SnCl2 + x H2O}$$ I done it ...
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396 views

Why does fluorine form stable oxides while chlorine form unstable oxides? [closed]

The fluorine however it says my text book doesn't combine well with oxygen, nitrogen and itself but when about its oxides they are quite stable as $\ce{O3F2}$ has a melting point of $\pu{363 °C}$ ...
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How do reactant proportions affect the products of a chemical reaction?

Is it correct that if you alter the proportions of the reactants of many chemical reactions, especially step-wise, the products will change? Here is an example, please tell me if it is right or not: ...
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which chemical element has the lowest boiling point? [closed]

which chemical element has the lowest boiling point? Is it Helium(He) or is it Hydrogen(H)? Hydrogen is lighter than Helium.
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Can I grow chlorapatite crystals at home?

Can I grow chlorapatite crystals, $\ce{Ca10(PO4)6(Cl)2}$, at home? Is it as simple as ordering the elements online and throwing them into a beaker, and warming it up maybe?
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Why is sodium peroxide not of white colour even if it is paramagnetic? [closed]

Is colour always associated with paramagnetism?
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What is reduced and oxidized when potassium bromate reacts to oxygen and postassium bromide?

I'm trying to help lead my daughter to a solution and my high school chemistry is almost 30 years ago. For the following reaction, indicate the species being oxidezed and reduced and show the ...
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Why is hypophosphorous acid (H3PO2) a strong reducing agent?

Why is hypophosphorous acid $(\ce{H3PO2})$ a strong reducing agent? the oxidation state of phosphorous in $\ce{H3PO2}$ is $+5$, as hydrogen and oxygen both are more electronegative than phosphorous, ...
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437 views

HF co ordinate covalent bond? [duplicate]

Is it a co ordinate covalent bond,I think that due to high electronegativity of the fluorine atom it will attract the hydrogen electron towards itself.Am I right in thinking so?
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308 views

How do you tell whether fluorine goes to axial or equatorial position in iodine dioxide difluoride?

I need to find the $\ce{F-I-F}$ bond angle of $\ce{[IO2F2]^-}$. But the thing is I can put 2 fluorines in the equatorial or axial positions so I get 3 different answers. I'm guessing they're all ...
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Why is caesium considered the most reactive element and not fluorine? [closed]

Some people say caesium is most reactive element. I thought it to be fluorine as it is the element that reacts with almost all elements (except couple of inert gases). But caesium won't react many of ...
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How to write equations for a reaction of metals with water

Please write two equations for reacting lithium with water and barium with water. Make sure to add the states of matter after each compound. Currently, for lithium I have the equation $$\ce{2Li(s) +...
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195 views

Burning magnesium ribbon [closed]

I know that this might sound wrong but, in the reaction $$\ce{2 Mg(s) + O2(g) → 2 MgO(s) + energy}$$ isn't oxygen supposed to be oxidised as it has excess electrons $(\ce{O^2-})$ and can donate a ...
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Important Stoichiometry question, just need formula or help and answer checking [closed]

How many grams of Cobalt(II) chloride $\ce{CoCl2}$ is needed to make $\pu{0.645 L}$ with a concentration of $\pu{1.25 mol\:L^{-1}}$? (the molar mass of anhydrous $\ce{CoCl2}$ is $\pu{129.839 g\: mol^...
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163 views

Why nitrogen monoxide does not dimerise [duplicate]

This question has already been asked link Why doesn't nitrogen monoxide dimerize? but explination is not clear. I would like it to be explained in simple manner using molecular orbital diagram ...
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1answer
67 views

Compounds with high electron density [closed]

If $d$ is the ratio of the total number of electrons in a compound and the average radius(of all anions and cations, or covalent radii), are there known compounds (inorganic or organic) where $d$ is ...
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Chemistry of making glass [closed]

To boil glass, the lime and sand mixture of potash was heated and the off gas spent $\pu{125 mL}$ of barley hydroxide solution (density $\pu{1.14 g mL-1}$). The mass of the sediment was $\pu{4.925 g}$....
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627 views

water in redox reactions [closed]

why water can't react as anode , with metals , in a redox reaction? while studying electrochemistry, i passed through a table with certain metals , all having voltage (potential energy) less than ...
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Do you know book's name under the topic of anti corrosion materials and binders? [closed]

I need book's name talking about anti-corrosion materials or binders to complete my graduation project
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384 views

why bond length of double bond is less than that of triple bond? [closed]

why bond length of double bond is less than that of triple bond ? I came across this question many a times. I am confused because there is a sigma bond and two phi bond in triple bond and a sigma and ...
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236 views

Different types of oxide [closed]

Among the following oxides in order amphoteric, Basic, Acidic, Neutral and mixed oxides respectively: $\ce{B2O3, SnO2, CO, Pb3O4, CaO}$ I know metals are basic and non metals are acidic . But ...
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What is the effect of change in pH on precipitation? [closed]

What is the effect of change in pH on precipitation? I was curious as to how pH actually affects precipitation.
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1answer
481 views

What happens in the reaction of hydrogen peroxide with potassium iodide in acidic environment? [closed]

I would like to know how the products form in the following reaction: $$\ce{H2O2(aq) + 2KI(aq) + H2SO4(aq) -> I2(aq) + K2SO4(aq) + 2H2O(l)?}$$
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Are there ligands without lone pairs? [closed]

The Nitronium ion, which is a positively charged ligand, in which the donor atom is Nitrogen. The question is, that Nitrogen has a total of 5 electrons, it shares 2 with oxygen and donates 2 electrons ...
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calcium chloride dihydrate Properties [closed]

Does calcium chloride dihydrate share many of the same properties as just calcium chloride? Can calcium chloride dihydrate Be added to food just as calcium chloride? Not that I would but just curious?...
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Complex compounds [closed]

[PPh4][PF6] can you please explain how to get that compound (getting reaction), and how will look the dissociation equation. I know that [PPh4] is tetraphenylphosphonium chloride (PH4 is phosphonium) ...
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Homework in chemistry [closed]

How we can get that Ca[Cu(SCN)4] (getting reaction)? And can you hepl me with dissociation equation for this complex?
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High temperature acids

Some of the proton production of an acid happens due to temperature and some of the proton production of an acid happens due to quantum tunnelling.But if we increase the temperature a lot the proton ...
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1answer
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Good books in inorganic chemistry? [duplicate]

I would like you to reccomend me a book (books) in inorganic chemistry , with good explanations , problems and solutions. Actually, i want to study it profoundly, but my theory isn't good enough.
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587 views

How is ozone formation form oxygen **spontaneous**?

DeltaH for process is positive and deltaS is negative. Then by thermodynamics,deltaG for process must be positive at all temperatures. Then how is ozone formation spontaneous?
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315 views

Why do some acids have pH 8? [closed]

Is it necessary for an acid to have pH less than 7? If no, please elaborate with examples.
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Strange observation!

Every one have observed that when we pour cool water into a transparent glass (or simply glass), some droplets accumulate on the outside part. Did the droplets come pass through the glass? If they ...
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What is the mass of ozone present in 10.6 g of Na2CO3?

I got a question in my textbook asking for the mass of oxygen present in 10.6 grams of $\ce{Na2CO3}$. Why are they asking about the mass of oxygen? Does this refer to $\ce{O2}$? Shouldn't it be the ...
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How does CaO react with NaOH? [closed]

$\ce{CaO}$ being a basic oxide should not react with $\ce{NaOH}$. Then how come decarboxylation takes place using soda lime? I am confused.
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967 views

Although thermodynamically feasible, in practice, magnesium metal is not used for the reduction of alumina in the metallurgy of auminium. Why?

Everyone knows: $$\ce{Mg +Al2O3->MgO +Al}$$ This reaction is thermodynamically feasible. Use can we this for reduction of Alumina. And produce Aluminium. Then why don't we not use this why?
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What is the bond in H2O (water) molecule ? And why? [duplicate]

Is it covalent or coordinate covalent bond ? Because it can be a bond between O and 2 H atoms and so it will be covalent bond . And it can be a bond between H (+ve) ion and Oh(-ve)ion and it will be ...
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1answer
945 views

What element is/used to be called Fb? [closed]

What element used to be called Fb? It was supposedly found in a meteorite in Antarctica and I can't find any references of it.
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1answer
127 views

How does an air conditioner produce liquid [closed]

I always notice that when an air condition is working and cooling the room it, is heating outside the room and a Liquid is dropping from the other side of the air conditioner. how does this happen and ...
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What makes a molecule a polyatomic ion?

I checked the Wikipedia page, but it did not seem to provide a very intuitive explanation. What distinguishes a molecule such that it behaves like a polyatomic ion? I understand that it is a ...