Episode #125 of the Stack Overflow podcast is here. We talk Tilde Club and mechanical keyboards. Listen now

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.

Filter by
Sorted by
Tagged with
-1
votes
2answers
3k views

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?
-1
votes
1answer
171 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 ...
-1
votes
1answer
180 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.
-1
votes
1answer
448 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 ...
-1
votes
2answers
151 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 ...
-1
votes
1answer
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 ...
-1
votes
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 ...
-1
votes
2answers
5k views

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?
-1
votes
1answer
1k views

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 ...
-1
votes
2answers
266 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 ...
-1
votes
1answer
728 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
-1
votes
1answer
81 views

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:...
-1
votes
2answers
1k views

What's a natural substitute for baking powder or baking soda? [closed]

What's a natural substitute for baking power or baking soda? I am doing a project where I need a raising agent in liquid form. Naturally, I can't use anything carbonated so baking powder/soda are out ...
-1
votes
2answers
9k views

Double Displacement Reactions that produce gas [closed]

What type of double displacement reactions can form a gas. How can i determine if a double displacement reaction will form a gas?
-1
votes
1answer
27 views

How to produce Calcium Chloride Desiccant for Ocean Container

I want to produce Calcium Chloride container Desiccant for Food and Textiles related items. I have this specs of Calcium Chloride and i have PP Non Woven Bags for its packaging. I want to know just ...
-1
votes
1answer
41 views

Cupric and cuprous copper [duplicate]

Copper has two chlorides: $\ce{CuCl2}$ and $\ce{CuCl}.$ Copper reacts directly with chlorine to form a copper(II) chloride. Why doesn't it form copper(I) chloride? Is it because $\ce{CuCl2}$ is more ...
-1
votes
1answer
52 views

What is the physical meaning of the statements like “weight percentage of FeO in Fe”? [closed]

I have always had the notion of calculating weight percentage of Fe in FeO. It always seems that we are to calculate at times the weight percentage of FeO in Fe.Particularly when one weight percentage ...
-1
votes
1answer
43 views

How to find the resist in pH change when both are same buffers of same concentration? [closed]

We are given two buffers [a) 0.1 M phosphate buffer of pH 7.7 and (b) 0.1 M phosphate buffer at pH 6.71 . If acid is to be added to the buffers, which of them, will resist the pH changes better I ...
-1
votes
1answer
31 views

How can I measure calcium levels in my blood at home? [closed]

I need to check my vitamin D levels regularly for my disease. It doesn't seem possible to measure at home, but measuring calcium in the blood may be more achievable since they are directly correlated. ...
-1
votes
1answer
129 views

Why is Potassium permanganate a better catalyst than Potassium Iodide? [closed]

I did an experiment measuring the activation energy of Hydrogen Peroxide with different catalysts. Potassium Permanganate seems to be a better catalyst as the activation energy was lower than the one ...
-1
votes
1answer
29 views

How does energy and speed affect sub-atomic particles (protons, neutrons, electrons) in an electric field [closed]

(Source: https://gyazo.com/a4d5beed3272a7ca793dd8e2f7e8be3c) I am having trouble understanding the problem above. Why does it matter if the particles are held at constant energy or speed? How does ...
-1
votes
1answer
57 views

Why is a compound that is more stable gives out less energy upon reaction? [closed]

I am having trouble relating stability with energy released. For example, I am looking at a statement regarding Benzene that says, since delocalised electron model of Benzene is more stable than the ...
-1
votes
1answer
42 views

Strength of oxoacids of Chlorine [closed]

I have seen various different contradicting statements about oxoacids of chlorine regarding oxidising strength & reducing strength of these. I understand the trend for acidity that HClO4 is ...
-1
votes
1answer
59 views

Why oxidation state decreases

oxides of group 1 elements are Li2O , Na2O2 , KO2 , RbO2 Oxygen’s oxidation state in each compound is -2 , -1 , -1/2 ,-1/2 respectively I.e oxide-> peroxide-> superoxide my question The oxidation ...
-1
votes
2answers
45 views

How does acidifying a compound in qualitative analysis make sure any interrupting compounds get removed?

So I've learnt that acidifying a compound for salt analysis is to remove any basic interference and remove interrupting compounds such as carbonates. How does it remove them or what reaction is taking ...
-1
votes
1answer
38 views

Electric conductivity

Well I was wondering why some materials have a higher resistivity than others . So I took two elements randomly . I picked carbon and silicon . Carbon has lower resistivity than silicon and obviously ...
-1
votes
1answer
106 views

Equilibrium constant from mole ratio

Chapter 4, problem 13 from the Chemical Priciples [1, p. 170]: Equilibrium concentrations Experiments have shown that at $\pu{60 °C}$ and $\pu{1 atm}$ total pressure, the equilibrium ratio of $...
-1
votes
1answer
442 views

Why is the combustion of Nitrogen endothermic? [closed]

Other combustion reactions are exothermic but this combustion reaction endothermic. Why ? Please explain..
-1
votes
1answer
24 views

Dilution of Concentrated TiCl4 using deionized water [closed]

How can we dilute conc TiCl4 (>99%) to 20 % w/w, using only DI water?
-1
votes
1answer
92 views

Formulation and Nomenclature of Boric and Phosphoric Acids

Why are boric and phosphoric acids are formulated as: H3BO3 H3PO4 Instead of: HBO2 HPO3 Because the acids end with the -ic suffix, the valences of the elements between the hydrogens and oxygens ...
-1
votes
1answer
47 views

Quantity of base needed to neutralise litre of 36% HCl?

Sorry for asking a basic chemistry question. I last did this kind of chemistry at school about 30 years ago and I don't have confidence that I'd get it right from first principles :) Short version: ...
-1
votes
1answer
96 views

If the net ionic equation and complete equation balance differently, which one do you use? [closed]

Sometimes the full equation of a reaction and the net ionic equation balance out differently. If that is the case, which is the correct one to use? For instance, in the reaction between a solution of ...
-1
votes
1answer
31 views

Mole fraction concept

In a certain titration experiment, 1) when $\ce{KIO3}$ solution is added to $\ce{KI}$, the $\ce{I-}$ ion is oxidised to the triiodide complex, $\ce{I3-} $ $\ce{IO3- + 8 I- -> 3 I3- + 3H2O}\tag{1}...
-1
votes
1answer
35 views

Ionisation energy is lower for higher energy shell?

Why does an electron in a higher energy orbital require less energy to remove it? Wouldn't it be harder to remove an electron from a higher energy orbital when compared to a lower energy orbital?
-1
votes
1answer
270 views

Will reaction of hydrogen sulfide + copper chloride/potassium chloride occur and why?

I'm pretty new to chemistry and came across a last year's chemical olympiad in our country and I got stuck on this (I tried googling this problem but after a half of hour I gave up): Will these ...
-1
votes
1answer
24 views

How to evaluate a non-ionized compound activity coefficient? [closed]

I know that the activity coefficient of compound such as $\ce{NaHCO3}$ is greater than unity averaging 1.13 for seawater ionic strengths, but how can we evaluate this value?
-1
votes
1answer
47 views

Why is aluminium used to treat waste after a lab experiment? [closed]

How does adding aluminum metal pieces into a waste beaker help treat solids and liquids in the beaker so you can safely send the solids to a landfill and dispose of the liquids in the sink drain ...
-1
votes
1answer
2k views

What is the order of volatile nature of Group 15 hydrides? [duplicate]

Among NH₃,PH₃, AsH₃, SbH₃ the increasing order of volatility given in my textbook is as follows. NH₃< SbH₃< AsH₃< PH₃ I know that among all these hydrides NH₃ alone is capable of forming ...
-1
votes
1answer
75 views

Will the solubility product constant differ in this case? [closed]

I am considering the solubility product of sodium citrate. I need this value, I do not have it. However, I do know that the solubility product of calcium citrate is (7±2)×10^−14. Is it safe to ...
-1
votes
1answer
96 views

Obtaining 30% sulfuric acid [closed]

What volume of $10\%$ sulfuric acid solution ($\rho = \pu{1.07 g cm-3}$) do you need to put into $\pu{300 mL}$ $50\%$ of the same acid solution ($\rho = \pu{1.4 g cm-3}$) to get $30\%$ solution? I've ...
-1
votes
2answers
687 views

Do ferrous sulfite and aluminum sulfite exist?

Source: Concise Chemistry-ICSE (Class X)SELINA PUBLISHERS Pg 207 In this book, it is mentioned that ferrous sulfite and aluminum sulfite does not exist. I even tried searching these on Google but ...
-1
votes
1answer
731 views

Carboxylate salt of Iron

I read somewhere that Fe does not react with formic acid. Because carboxylic acids are very weak. But by searching I found an article about carboxylate on wiki. It mentions about carboxylate metal ...
-1
votes
1answer
32 views

Confused about excercise with w/w% [closed]

I found super simple excercise which is killing my mind. I should prepare 500 mL 1M HCl. I should make it from 36 w/w% HCl. I do not understand how I can make from less concentrated solution something ...
-1
votes
1answer
737 views

Would the bond length of boron trifluoride remain the same after electron donation?

Would the bond length of boron trifluoride remain the same after electron donation? My guess is it should be the same, because if $\ce{BF3}$ donates electrons from the low energy occupied orbitals, ...
-1
votes
2answers
217 views

Oxidation States?

Metals in low Oxidation states are usually reducing agents. Is there any example of a metal in zero Oxidation state acting as an oxidizing agent.
-1
votes
1answer
3k views

Lattice enthalpy of alkaline earth metals [closed]

How lattice enthalpies of alkaline earth metal carbonates is affected on moving down the group?
-1
votes
1answer
3k views

Structure of nitric oxide

These are the two resonating strctures of NO given in my textbook. In the first resonating structure, oxygen is shown to have 9 electrons. How can that be possible since oxygen does not have the third ...
-1
votes
1answer
397 views

Valences of atoms in covalent compound

1 does the valency of an atom in a covalent bond equals the number of bonds it has with the other atoms in that compound? 2 If "yes" then typically to bonds chlorine has in NaCl04 It has a valency ...
-1
votes
1answer
654 views

How could you balance this redox equation involving Cr2O7 2- and H2O

Hi I know that balancing redox equations you first work out the separate half equations first and then combine them however I'm not sure how to balance this one? $$\ce{Cr_2O_7^{2-} + H^+(aq) + e^- \...
-1
votes
1answer
18k views

Is silicon dioxide a polar molecule or not?

Is $\ce{SiO2}$ is a polar molecule or not? The difference in electronegativity between the two atoms is 1.7. I read that $\ce{SiO2}$ doesn't exist as a single molecule in which the silicon atom is ...