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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48 views

Is this balanced redox equation correct? [closed]

I'm trying to balance an equation using oxidation numbers $\ce{MnO4^- + H+ + Cl- -> Mn^2+ + Cl2 + H2O}$ my suggestion: $\ce{MnO4- + 8H+ + 5Cl- → Mn^2+ + 2.5Cl2 + 4H2O}$ the 2.5 $\ce{Cl2}$ is ...
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254 views

T-shaped and Seesaw geometry hybridization

Why are the filled orbitals s and px (in the T-shaped case) also part of the hybrid orbitals of the central atom in sp3d hybridization? In other words, why should the hybrid orbital not be a p3d, for ...
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445 views

Extraction of metals using electrolysis

I came across a question that goes as: The electrolytic method of reduction is employed for the preparation of metals that are: Less electropositive Moderately electropositive Highly ...
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155 views

Is there any obvious relation between sodium bicarbonate and ammonia; (how) can sodium bicarbonate be involved in producing ammonia?

Using sodium bicarbonate as a deodorant sometimes can produce a strong ammonia smell. Is there some obvious chemical explanation for this?
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505 views

How to find the bond order in delocalized pi bonding of more than two atoms? [duplicate]

J.D Lee has written down some rules for calculating the bond order. I have no difficulty following step 1 and 2. It's easier to work with an example so I'll highlight my issues with step 3 , 4 ...
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2answers
462 views

Does titanium(II) oxide conduct electricity? [duplicate]

In my book, it is given that $\ce{TiO(s)}$ is an electrical conductor. But I'd think that since $\ce{TiO(s)}$ is ionic and in solid state, it shouldn't conduct electricity. So, why does it conduct ...
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82 views

What are the molar and mass concentrations of 18% HCl? [closed]

A solution of hydrochloric acid of mass fraction $\pu{18.0\%}$ has a density of $\pu{1.0878 g cm-3}$. What are the molar and mass concentrations of this solution? I got $\pu{5.37e-3}$ and $\pu{195.8}$...
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112 views

Should I include water of crystallisation in the product of a precipitation reaction with silver nitrate?

I've deduced that a certain compound has an ionization isomerism. I just want to know which of the following reactions is correct. I think this one is the more likely: $$\ce{[Cr(H2O)5Cl]Cl2 \cdot ...
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1answer
64 views

How would we know if an interhalogen compound would be a gas/liquid at a particular temperature? [closed]

Ex- how can we understand that ClF is a gas @ 298K? Is there some logic behind it? Please explain.
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1k views

How does barium chloride identify sulfate ions?

What is it about barium chloride specifically that makes it able to form a precipitate with sulfate ions. What is the chemistry behind this?
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How to separate two aqueous salts?

I have a mixture of two aqueous salts, $\ce{Cr(OH)3}$ and $\ce{NaNO3}$ and I'd like to separate them and purify the $\ce{Cr(OH)3}$ in order to make $\ce{KCr(SO4)12 . H2O}$ (Chromium Alum). Does any ...
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884 views

How to state something as strong or weak oxidising agents?

It is said that conc. $\ce{H2SO4}$ is a strong oxidising agent. Why is it regarded as strong? In case of acids, we say something that fully ionizes in an aqueous solution is a strong acid. But what ...
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285 views

How is square planar geometry possible in metal complexes?

I came across this statement and I don't understand what it meant by it: "Square planar geometry is favoured by ligands that can form pi bonds by accepting electrons from metal atoms or ions." How ...
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32 views

Difference between neutral and amphoteric oxides

What is actual difference between neutral oxides (e.g. $\ce{NO},$ $\ce{N2O},$ $\ce{CO})$ and amphoteric oxides (e.g. $\ce{Al2O3})?$ I got a hint of it from the comment of Ivan Neretin.
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Electrophilic base / nucleophilic acid / basic electrophile / acidic nucleophile [closed]

What I was understanding is that all bases are nucleophiles and acids are electrophiles means the condition for them is same and all nucleophiles are basic and all bases are nucleophiles and same for ...
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66 views

Question About Reversible Reactions and Batteries

So my book says that the batteries we have considered so far( Daniell cells) are low life span, because they reach equilibrium too fast. In the next paragraph, it says they are also made by ...
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38 views

How can I prepare two phosphate buffer of different concentrations but give same pH? [closed]

How is it that buffers of different compositions can have the same pH? For example, it is possible to prepare 0.01 M phosphate buffer of pH 7.0 and 0.1 M phosphate buffer of pH 7.0? How? I used ...
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73 views

Why anhydrous copper sulphate is acidic in nature but pentahydrate copper sulphate is amphoteric? [closed]

$\ce{CuSO4}$ is acidic salt because it is made up of $\ce{Cu(OH)2}$ (weak base) and $\ce{H2SO4}$ (strong acid). But why $\ce{[CuSO4.4H2O]H2O}$ is amphoteric?
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43 views

How could I prepare Iron(III) arsenate (FeAsO4)?

I have no idea in which conditions this compound is formed and would like to find out any / different ways it can be prepared (any easy way not requiring expensive equipment would be great).
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2answers
43 views

Chemical reaction

Consider the following Ca(OH)2 + 2NH4Cl → CaCl2 + 2NH3 + 2H2O (Source: https://chemiday.com/en/reaction/3-1-0-440) It appears to be double displacement reaction as CaCl2 is formed, but it’s not as ...
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92 views

Why can't a weaker acid protonate the conjugate base of a stronger acid?

So I've heard that, supposedly, a weaker acid cannot protonate the conjugate base of a stronger acid to give that stronger acid. For instance, adding ethanoic acid to sodium sulphate will not result ...
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37 views

Periodic Table and Atomic Radius

Well Wikipedia says that the atomic radius is lowered for elements in a group closer to noble gases (same row). It also says that those elements want to keep their valence electrons more than metals, ...
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1answer
42 views

How the unreactivity of lithium hydride makes it useful in synthesis of other useful hydrides? [closed]

I have seen the following chemical property of lithium hydride in the textbook which seems to be incomplete: Lithium Hydride is rather unreactive at moderate temperatures with ${O_2}$ or ${Cl_2}$...
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640 views

Questions on Neutral oxides

Neutral oxides, are non metal oxides which are neither acidic nor basic. I have noticed a pattern for neutral oxides which I am unsure actually holds true. $\ce{CO}$, $\ce{H2O}$, $\ce{NO}$ and $\ce{...
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137 views

which one is the correct statement of “Law of definite proportion”? [closed]

according to my genius Teacher ' this law state that "the composition of a compound in terms of atoms (Not Mass) remains constant". His Proof: H2O and D2O are similar compounds (because H and D have ...
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425 views

Why do large cations stabilise large anions and small cations stabilise small anions? [closed]

I see this trend from enthalpy change of decomposition data, though I struggle to find a decent explanation for why.
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33 views

Valence Electrons of Molecules

Why do we say that hydrogen has 1 valence electron? Hydrogen (H2) is a molecule so how does this make sense?
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81 views

Which is stronger ? Picric acid or phoshoric acid

I would like to have clarity as to which acid is the stronger acid; picric acid or phosphoric acid. Because different sources are giving me different answers
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94 views

Memorizing chemical equations [closed]

Is there's an easy or at least a practical solution for memorizing chemical equations? I'm currently in grade 12 and we're studying a whole chapter about Iron and how to prepare it, starting from the ...
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1answer
334 views

Balancing the reaction of nitric acid with zinc using oxidation number method

In a previous question, there was confusion relating to what this "oxidation number method" is. So I will illustrate that before my question. Write the skeleton equation representing chemical ...
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1answer
90 views

Nickel-63 and surge protector / voltage regulator

I've read that nickel-63 is used in surge protectors and voltage regulators. What is it about nickel-63 that makes it particularly suitable for those applications?
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1answer
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Coloured salts for silica garden [closed]

I recently thought about making a silica garden. I have copper sulphate and nickel sulphate right now. What other salts would be the best to put along with these two? Also should I buy sodium silicate ...
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754 views

Why are ammonium chloride and ammonium hydroxide used in calcium salt detection?

On adding $\ce{ (NH4)2CO3 }$ solution to $\ce{ Ca^{2+} }$ aqueous salt solution, $\ce{ CaCO3 }$ is formed as a white precipitate, which confirms the presence of the cation. While doing the test in my ...
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494 views

Molecular formula and decimal number

Today I did some stoichiometry exercise about finding the ratio between the elements. What confused me was that while the ratio was right, but it was decimal. Ex. Reducing $\pu{0.800 g}$ of lead ...
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1answer
378 views

Which solution is more conductive

Which of the following solutions is more conductive: 1) 0.1 M sodium hydroxide and 0.1 M hydrochloric acid mixture (effectively NaCl?) 2) 0.1 M sodium hydroxide and 0.1 M acetic acid mixture (...
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1answer
643 views

Reaction between silver(I) hydroxide and an alkali [closed]

I've read about this in a booklet, but I can't find its stepwise reactions or its derivation: $$\ce{AgOH + NaOH -> Ag2O}$$ And how does a base ($\ce{AgOH}$) react with another base ($\ce{NaOH}$)? ...
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1answer
529 views

Determination of magnesium sulfate hydrate formula [closed]

A hydrate of magnesium sulfate has a mass of $\pu{12.50 g}$.This sample is heated until no water remains. The anhydrous $\ce{MgSO4}$ has a mass of $\pu{5.30 g}$. Find the formula of the hydrate. What ...
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Why does Bi show inert pair effect and not Sb?

The 6s orbital electron pair is strongly attracted by the nucleus due to the poor shielding effect of 4f and 5d orbitals. However there are other filled orbitals that shield the nucleus. In case of 5s ...
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Solubility of Alkali Metal Chlorides

Why does Potassium Chloride less soluble than Sodium Chloride in water, isn't it supposed to be other way round? Since Potassium Chloride would be more ionic than Sodium Chloride?
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186 views

Ammonia sigma bonds p character

Why does ammonia's sigma bonds to H have more p character than let's say ethane. I am guessing it has something to do with the effect the lone pair has on bond lengths and angles, but not quite sure ...
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1answer
197 views

What is the systematic name of ammonium bisoxalato cuprate (II)? [closed]

What is the systematic name of ammonium bisoxalato cuprate(II)? I already tried $\ce{(NH4)2[Cu(C2O4)2]^{2+}}$ but i am uncertain if that answer is correct.
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514 views

Confusion regarding sigma bond and pi bond

I was recently told that a sigma bond between two $\mathrm{3p}$ orbitals is possible but a $\pi$ bond between the same orbitals is not possible. Although I was not told the reason, I am speculating ...
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2answers
152 views

What type of chemical reaction is this?

So far we have learned about about single displacement, double displacement, gas evolving, neutralization, synthesis, disassociation, and combustion. I was trying to solve the following chemical ...
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98 views

Determine chemical reaction stoichiometry?

Unfortunately my background on chemistry is very weak but I have to do some experiments in that field as a part of my project. Here is my problem: I am doing some leaching experiments on realgar (one ...
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1answer
2k views

Heating of potash alum

I have this reaction : $$\ce{K2SO4.Al2(SO4)3.24H2O -> K2SO4 + Al2O3 + 24H2O}$$ And I notice that while $\ce{Al2(SO4)3}$ becomes $\ce{Al2O3}$ it doesn't happen so with $\ce{K2SO4}$. Why ? I guessed ...
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how does incomplete combustion of methane produce soot?

Ususally the incomplete combustion is formed this way: hydrocarbon + oxygen-> carbon + carbon monoxide + water. what about methane?
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Hybridization in Oxygen and Nitrogen

What is the proper orbital hybridization O and N in $\ce{H_2O}$ and $\ce{NH_3}$? The rules say that they are sp and sp2 hybridized, respectively, but some sources say both are sp3. I have problems ...
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276 views

Do the tetramminecopper(II) and hexathiocyanatoferrate(III) complexes obey the 18-electron rule?

Can anyone tell me whether $\ce{[Cu(NH3)4]^2+}$ and $\ce{[Fe(SCN)6]^3-}$ obey the 18-electron rule, and if not, why? I found $\ce{[Cu(NH3)4]^2+}$ and $\ce{[Fe(SCN)6]^3-}$ have 17 electrons, was I ...
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776 views

what are the methods to reduce ticl4 to ticl3 [closed]

I need the methods for reducing TiCl4 into TiCl3. I have searched for the methods ,but I couldn't find the answer. Please suggest me the methods
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I forgot the basics of writing equations, or maybe it is not me? [closed]

Sulfuric acid is commonly used for the pickling of iron to remove surface rust before galvanisation. $$\ce{Fe2O3 (s) + 3H2SO4 (aq) -> Fe2(SO4)3 (aq) + 3 H2O (l)}$$ However, I am not sure if given:...