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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why bond breaking in ATP releases energy?
we always come across that formation of bond releases energy and bond breaking require energy but in ATP case when it changes into ADP or AMP (bond breaking) the energy is released.why?
Further, How ...
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How Can I make Make 0.1M Mercury nitrate solution?
I dissolved 14 grams of Mercury nitrate dihydrate in 200 ml water and diluted to 250 ml.
the solution is cloudy and seems that is not dissolved. any suggestions?
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Solubility of substances in HF; High Solubility of Substances in Most Hydrogen-Bonded Compounds
Across my chem course, I noticed that HF does not dissolve several ionic and covalent compounds. What sort of compounds are soluble in HF? Or do no compounds dissolve in it?
And why are hydrogen-...
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Buffer Capacity Equation
Whilst doing buffer capacity, my lecturer presented us with the following equation for buffer capacity:
$${log(\frac{[salt] + x}{[acid] - x})} = 1$$
A task set by the lecturer is to rearrange the ...
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Finding magnesium aluminosilicate mineral with a sandwich structure [on hold]
It is a mineral material with a sandwich structure, which contains $\ce{Mg^2+}$, $\ce{Al^3+}$ and many $\ce{Si-O}$ bonds.
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pH calculation and concentrations of all species present in a solution [on hold]
When $\ce{NO2}$ is bubbled into water, it is completely converted to $\ce{HNO3}$ and $\ce{HNO2}$:
$$\ce{NO2 + H2O -> HNO3 + HNO2}.$$
Calculate the $\mathrm{pH}$ and the concentrations of ...
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How Can I Induce Corrosion Electrochemically?
I'm very interested in measuring corrosion in metal alloys, particularly in salt solutions. I understand metals corrode over time, however, I was wondering if it's possible to electrochemically "speed ...
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what is the difference between oxidation state, charge and valency? [duplicate]
Is there any specific atom or compound or molecule possessing oxidation state different from charge and valency, so that we can clearly understand the difference between the three.
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Why does copper decrease in mass when reacted with silver nitrate?
I did a lab recently of the reaction of copper and silver nitrate.
$$\ce{Cu(s) + 2AgNO_3(aq) -> Cu(NO_3)_2 + 2Ag(s)}$$
I measured the mass of copper before and after the single replacement ...
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What are the reaction products/by-products of a Tannerite explosion? [on hold]
What are the products/by-products of the following reaction of "Tannerite"? I am looking to find out if any of the breakdown products pose an environmental risk.
From Wikipedia on Tannerite:
"Two ...
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My problem with Tollen's reagent [duplicate]
The formula of Tollen's reagent is $\ce{[Ag(NH3)2]+}$. What is the bond existing between the silver(I) atom and the ammonia groups? Because ammonia is stable, it doesn't need to gain or donate any ...
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Confusion regarding contact process [duplicate]
I'm talking about this video, from where I'm referencing.
My problem is with stage 3. From what I understand, we need $\ce{H2SO4}$ for mixing it with sulfur trioxide to produce oleum. From oleum ...
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Reason for shorter bond between sulphur and oxygen?
I resently came across this sentence in my textbook “the bonds between sulphur and oxygen in oxides of sulphur (SO2 and SO3 ) are much shorter than might be expected for a single bond“ I couldn’t find ...
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How can I precipitate metal ions from a solution? [on hold]
I'm in Grade 12 Chemistry. We're doing some solubility, and one of the things we need to be able to do is explain a procedure where we separate metallic ions from a solution. So, for example, how can ...
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What gas is released when heating sulphuric acid? [duplicate]
I'm doing a chemistry project and am really unsure about the gas released when heating sulphuric acid.
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Formula of Oxone
A problem in my book asked the commercial name of sodium peroxide. The answer given was 'Oxone'. Even the website https://www.911metallurgist.com/oxone/ mentions oxone as sodium peroxide.
However, ...
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How to get rid of calcium carbonate and other salts formed by calcium hydroxide in air?
My basic question comes from the idea that in olden days people used lime to paint houses, so after it is dried out it becomes white paint which sticks to the walls. So, how to get rid of it? The ...
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What drives the formation of salts?
Can someone explain why potassium and chlorine undergo an exothermic reactiom to form an ionic solid despite that potassium has an ionisation energy of 425 kJ mol-1 and chlorine has an electron ...
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A kind of universal solvent? [on hold]
Is there solvent which can dissolved every known material/compound/element weather If it reacts with it and even may dissolve a very little (but some significant ) amount.
Any kind of acids/base/...
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Density change due to hydrogen bonding in water and other compounds [duplicate]
I know that the hydrogen bonding between the water molecules causes water to expand when frozen (compared to water at 4 degrees). Do other compounds that contains hydrogen such as hydrogen sulfide and ...
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4answers
840 views
Ionic compound having highest solubility in water
Which ionic compound has highest solubility in water? I can find CsBr having highest solubility with 1230 g/L at 25 °C.
Note: compounds like ethanol are soluble to any extent in water, but they are ...
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3answers
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How do I know crystal structures from formula?
Give an explanation why $\ce{MgF2}$ and $\ce{CaF2}$ adopt different structure types.
For example, the structure of calcium fluoride is 'fluorite' and the structure of magnesium fluoride is 'rutile'. ...
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1answer
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vapor pressure of one part of binary compound
Let's say we have a binary compound AB in an enclosed container, and let's say there's a tendency to form B-vacancies so that B atoms/molecules escape and form a vapor. Let's assume there's enough of ...
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Comparing the number of oxidation states of Vanadium and Arsenic
USNCO 2004 Question 45 states:
Which element exhibits the greatest number of oxidation
states in its compounds?
(A) Ca (B) V (C) Cu (D) As
I ruled out Ca, as I know it only exists as +2. I ...
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To Check the basicity difference [closed]
$$$$$$$$Give the correct order basicity of following compounds....,I have tried my best to solve this question but cannot solve it! can you solve it???$$$$$$$">
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Do reusable plastic water bottles break down [closed]
So many know that single use plastic water bottles break down with repeated use. Well the other day, I decided to buy a reusable water bottle. I am on a budget and picked up a Nike Hyperfuel 32oz. Its ...
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2answers
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What explains the stark white colour of my iodometric titration analyte solution?
During my Advanced Higher (secondary school) investigation, I reacted pure copper with concentrated nitric acid to acquire a copper nitrate solution. This was neutralised with excess sodium carbonate ...
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3answers
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What is the name of this chemical LiB2PO4H7? [duplicate]
I was recently looking at a chemical equation calculator that balances equations for you.
I came across a reaction that I am unsure about, it goes like this:
B2H6 + LiH + PO4 = LiB2PO4H7
I was ...
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Is there a Material that is High Heat Resistent and soluble?
What i‘m looking for is any sort of material that dissolves, while being able to resist temperatures of up to 1000°C.
And it doesn‘t have to resist during dissolution, only while it‘s solid.
And the ...
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1answer
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Aufbau principle in filling Ti
A few weeks ago, I was given this question to complete:
The ground state electronic configurations of Ti is $\ce{[Ar] 4s^2 3d^2}$
State whether it follows the Aufbau principle or not. If not, ...
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1answer
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Inorganic chemistry for condensed matter physicists
I'm a theoretical condensed matter physicist, on a field of magnetism research. I wonder if any of you could recommend a concise and well-written textbook on inorganic chemistry to learn concepts of ...
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Which of pyrophosphorous acid (H4P2O5) and hypophosphorous acid (H3PO2) is a stronger reducing agent?
My chemistry textbook suggests that "acids which contain a P-H bond have strong reducing properties". Both hypophosphorous acid (H3PO2) and pyrophosphorous acid (H4P2O5) contain two P-H bonds; a P-O-P ...
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Why does hydration enthalpy decreases instead of increasing down the group?
I have seen in my text book that for group 1 and 2 metals the hydration enthalpy decreases down the group.The reason I have found on the postWhich d-block cation has the maximum hydration enthalpy? is ...
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Oxidation of sodium thiosulfate by iodine
When $\ce{Na2S2O3}$ reacts with $\ce{I2}$, it undergoes a redox reaction as
$$\ce{2 Na2S2O3 + I2 -> Na2S4O6 + 2 NaI}$$
Sulfur is being oxidized from a $+2$ state to a $+2.5$ state. Why isn't it ...
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Is my chlorine sample real?
I bought a pressurized liquid chlorine ampoule online and I was surprised how thick it was. It was more like oil than water. Here's a YouTube video showing someone else with a very similar sample.
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Order for acidic strength of hydrides across a period
I have learnt that in a group , say group $15$, the acidic strength increases on going down the group as
$NH_3 < PH_3<AsH_3<SbH_3<BiH_3$
This is due to decrease in the thermal stability ...
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Nature of Monoxides of Carbon family
well CO is neutral, PbO and SnO is amphoteric but what about the nature of GeO?
In my textbook it's given that its basic in nature but in another its given that acidic in nature. and wikipedia says ...
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Relative stability of tin(II) chloride and tin(IV) chloride
Tin(II) chloride is often used as a reducing agent in multiple reactions. I gather it may be due to greater stability of the stannic ion over the stannous ion.
This seems to be against the inert pair ...
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Can hexavalent chromium be created by exposure of chromium alloys to air at room temperature?
I believe that Cr on its own (as in chrome coating) oxidizes as Cr(III) when exposed to air, and similarly I think that it is the same for Cr as a component of stainless steel.
Is it always the case ...
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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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Why does ligand substitution occur when OH- is a better ligand than NH3?
$$\ce{[Cr(H2O)3(OH)3](s) + 6NH3 -> [Cr(NH3)6]^3+ + 3H2O + 3OH-}$$
When excess $\ce{NH3}$ is added to triaquatrihydroxychromium(III), why does ligand substitution occur when $\ce{OH-}$ is a better ...
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1answer
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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 $...
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Testing for asbestos using readily available chemicals and tools?
Given that it is difficult to determine who is telling the truth in the recent claim that J&J covered up finding asbestos in their powder, is there any chemical test that we can perform on our own ...
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Does the reaction between phosphorus and chlorine produce phosphorus trichloride or phosphorus pentachloride
Phosphorus has two covalent compounds it can form with chlorine, where it is a single, central atom bonded to chlorine, which are phosphorus trichloride and phosphorus pentachloride. Because of this, ...
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Why do we need to add hydrogen to amorphous silicon?
I was recently studying about Staebler-Wronski effect observed in amorphous silicon (a-Si). I realised it was due to imperfections in the lattice structure and breaking of Si-Si bond to Si-H bonds.
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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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What does it mean that an electron quantum numbers are n1= 4 - l1?
I'm trying to solve some exercises from the 2017 IChO, and the problem 6-A1 states that
in first ionization, an electron with the quantum numbers $n_1 = 4 - l_1$ is removed.
Now, I've never seen ...
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1answer
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Why is helium considered as a non-metal?
How can helium be considered as a non-metal based on its chemical properties? Helium is a noble gas; it does not take part in chemical reactions under ordinary conditions. But non-metals tend to gain ...
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Why do monoisotopic elements have fractional masses? [duplicate]
While studying, i came to know that most elements have fractional masses because they exist as a mixture of different isotopes with different masses and their atomic mass is the relative mean of ...
