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
vote
0answers
18 views

Can an alcohol oxidation to ketone happen with hydrogen peroxide?

As far as I know, usually $\ce{CrO3}$ and $\ce{KMnO4}$ are used for this scope, but can other oxidizers such as $\ce{H2O2}$ be used?
0
votes
0answers
6 views

Why are bridge bonds weaker than terminal bonds in diborane?

In Concise Inorganic Chemistry by J.D.Lee (Adapted by Sudarsan Guha, Fourth Edition), on page 83, under the topic "Bridge Bonding" it is given for diborane ($B_2H_6$): The $d_{B-H}($terminal bonds$)...
1
vote
0answers
8 views

Bonding in Sulphur dioxide

In Concise Inorganic Chemistry by J.D.Lee (Adapted by Sudarsan Guha, Fourth Edition), on page 82, under section 3.8 - Types of Covalent Bonds (Sigma and Pi Bonds) it is given (for Sulphur dioxide ...
0
votes
1answer
27 views

Why does the d orbital size decreases on addition of electrons?

In Concise Inorganic Chemistry by JD Lee (4th edition; adapted by Sudarshan Guha), on page 80 under section 3.7 "The Extent of d-orbital Participation in Molecular Bonding" it is given: A second ...
1
vote
1answer
35 views

Why is trichloromethane more acidic than trifluoromethane? [duplicate]

In Concise Inorganic Chemistry by JD Lee (4th edition; adapted by Sudarshan Guha), page 78 under the topic "Back Bonding" it is given: $\ce{CHCl3}$ is more acidic than $\ce{CHF3}$ which is ...
6
votes
3answers
151 views

How can a neutral atom attract electrons when it's supposed to have zero charge?

A neutral atom is an atom with an equal number of protons and electrons We know the force of attraction between the proton and electron is equal and assuming that: one proton's positive charge ...
0
votes
0answers
27 views

Why is back bonding not possible in sulfur dichloride?

In Concise Inorganic Chemistry by JD Lee (4th edition; adapted by Sudarshan Guha), page 76 under the topic "Back Bonding" it is given: For $\ce{SCl2}$ the bond angle is 102° since the lone pair of $...
2
votes
0answers
23 views

Why are B-O-H and B-O-C angles in B(OH)3 and B(OCH3)3, respectively are higher than normal?

In Concise Inorganic Chemistry by JD Lee (4th edition; adapted by Sudarshan Guha), page 77 under the topic "Back Bonding" it is given: The $\mathrm{2p}\pi$-$\mathrm{2p}\pi$ back bonding in $\ce{B(...
11
votes
2answers
366 views

“T” in subscript in formulas

Does a “T” in a formula subscript indicate all possible numbers of atoms? $\ce{FeO_T}$ is the specific one I came across (in the "bulk chemistry" table here: https://sciences.ucf.edu/class/...
3
votes
1answer
459 views

What can be done to increase the yield of a product in a chemical reaction that has reached equilibrium?

Let's take the following reaction that has reached equilibrium $$\ce{CaCO3 (s) <=> CaO (s) + CO2 (g)}$$ What can be done to increase the yield of calcium oxide ? My initial thought was to ...
1
vote
1answer
50 views

How to assess sunscreen effective via blueprinting?

How do I assess the effectiveness of sunscreen creams by using the blueprinting process? I know blueprinting is done when something is sensitive to light and this may cause reactions to produce a ...
7
votes
2answers
22k views

Hybridization of sulfur in sulfur dioxide

One of the canonical structures for sulfur dioxide - $\ce{SO2}$ - has sulfur (with a lone electron pair) double bonded to each oxygen atom to form a total of 4 bonds for sulfur - which can be achieved ...
10
votes
3answers
873 views

What does a comma signify in inorganic chemistry?

$\ce{(Ca{,}Co)CO3}$ I have never ever seen this before. What does this mean exactly?
4
votes
1answer
70 views

Dipole moment in NF3 versus NH3

The usual explanation for the molecular dipole moment of NF$_3$ being smaller than that of NH$_3$, despite the N-F dipole being stronger than the N-H dipole, is that influence of the lone electron ...
-1
votes
0answers
17 views

Electronegativity comparison [on hold]

Can someone please explain me why the electronegativity order of hybrid orbitals goes like this: sp>sp2>sp3? I am just new to this chapter of chemical bonding so a simple explanation will do the ...
-3
votes
0answers
32 views

The intuition behind usage of wt% in K_T? [on hold]

Why are they not taking the percentage of $a_{\ce{AlN}}$ while in the denominator wt% is being taken. My question is why not simply the weight instead of weight percentage and secondly if at all we ...
5
votes
2answers
283 views

How to measure saturated salinity and mineral levels for flaked sea salt?

I am a sea salt enthusiast looking to make the perfect flakey sea salt. I start with sea water and boil it down to a thick brine. Then with less heat I reduce the brine more slowly and inverted salt ...
3
votes
1answer
9k views

Why is Cr²⁺ is a good reducing agent but Mn³⁺ is a good oxidising agent?

The question is the same as the title states. In my text book,the following is written $\ce{Cr^{2+}}$ gets converted to $\ce{Cr^{3+}}$ as the +3 oxidation state hase half filled $\mathrm{t_2g}$ ...
12
votes
1answer
514 views

What is the Structure of FeSO₄ • NO?

What is the structure of $\ce{FeSO4 \cdot NO}$ that is formed when $\ce{NO}$ is passed through ferrous sulfate solution? If it is a brown ring complex then why does the complex sphere break upon ...
-1
votes
0answers
32 views

Would it be possible to use phosphorus pentoxide as a heat storage material?

The reaction of phosphorus pentoxide with water shows the exorbitant solution heat of -377 kJ/mol (according to german Wikipedia; don't know if it means as per mol P2O5 or per mol P4O10). Is this ...
5
votes
1answer
7k views

What is the formula of bleaching powder?

What is the structure and preparation for bleaching powder? Why there is a controversy in the formula of bleaching powder? I have encountered many forms of the formula of bleaching powder, like $\...
-2
votes
0answers
20 views

KIO3+Cl2+KoH ->KIO4+kCl+H2O [on hold]

Determine the amount of KIO3 necesaary to react with an escess og Cl2 and KOH,to obtain 50g of KIO4,knowing that the following redox reaction(to be balanced)has 95% of yeilds: KIO3+Cl2+KoH ->KIO4+kCl+...
1
vote
2answers
44 views

Can you give examples for a halide ion reacting with interhalogen compound to give polyhalides?

Interhalogen compounds are formed when two halogens $(\ce{F},$ $\ce{Cl},$ $\ce{Br},$ $\ce{I})$ react together. They are represented by $\ce{XX'_n},$ where $\ce{X}$ is halogen of larger size and $\ce{X'...
-2
votes
2answers
59 views

Storage of Halogen [on hold]

I learned that we should store Bromine in brown coating glass bottle. But, I heard that halogen liquid is so reactive that it can melt even glass. So, I want to know the practical storage method of ...
1
vote
0answers
21 views

Why is lead's first ionisation enthalpy greater than that of tin?

Using Slater's rule, I found that both lead and tin's $Z_\mathrm{eff}$ for 6p and 5p electrons equal. However, the ionisation energy is different. Is comparing ionisation enthalpy on the basis of $Z_\...
3
votes
1answer
4k views

Explaining the colour change in the potassium permanganate titration of iron(II) ions

In the redox titration: $$\ce{MnO4- + 8 H+ + 5 Fe^2+ -> Mn^2+ + 4 H2O + 5 Fe^3+}$$ the colour change which occurs is purple to colourless, because of the decreased concentration of permanganate ...
-3
votes
0answers
31 views

What common elements and compounds is fluorine most attracted to? [closed]

What common elements and compounds is fluorine most attracted to? In example if you want to migrate the element from source A to source B what would be a good and fairly available element and/or ...
-1
votes
0answers
15 views

Polarity of bonds in 15th group hydrides [closed]

Determine the order of polarity of bonds in the following compounds: PH3,AsH3,SbH3,NH3
1
vote
1answer
57 views

Reactivity and its meaning

When we say that “potassium” is reactive, are we referring to a potassium atom or bulk potassium as in the solid metal? In other words does “potassium” refer to a type of atom or an agglomeration of ...
0
votes
1answer
29 views

Electrons distribution of oxygen atoms in ozone [on hold]

While dealing with the Lewis structure for ozone, most of the explanations show the electron distribution around the 3 oxygen atoms with a single and double bond. But if you count the number of ...
0
votes
1answer
34 views

Balancing the chemical equation using Oxidation Number Method [closed]

Permanganate ion reacts with bromide ion in basic medium to give manganese dioxide and bromate ion. Write the balanced ionic equation for the reaction. Please balance the equation using the oxidation ...
-1
votes
0answers
15 views

Calculating the molarity of strontium phosphate from given quantities [on hold]

10 g of strontium is reacted with 50 mL of 1 M phosphoric acid to form strontium phosphate and hydrogen gas. What molarity of strontium phosphate is formed? Equation of reaction: $$\ce{3 Sr(s) + 2 ...
-5
votes
0answers
27 views

please help me visualize bond angle? [closed]

Please help me visualize bond angle! "I mean there are no lines in compounds how we measure angle between such imaginary lines?"asap
0
votes
1answer
48 views

Synthesis of copper selenide

If I react selenium powder with copper chloride powder above the melting point of selenium (221 °C), will I end up with a chunk of copper selenide, with the chlorine given off as gas, or will I lose ...
0
votes
0answers
22 views

What will cure sodium silicate besides CO2? [closed]

I would like to cure water glass or sodium silicate. I tried air drying, but the skin that forms seems to prevent the rest of the compound from curing.
0
votes
0answers
17 views

Determining formula of potassium molybdate from the amount of metal deposited during electrolysis

$\ce{K2MoO_n}$ in an acidified solution is electrolysed, $\pu{0.112 L}$ of oxygen is liberated and $\pu{0.32 g}$ of $\ce{Mo}$ is deposited (Atomic mass = $96$). Find $n.$ Now for this, I calculated ...
1
vote
1answer
65 views

Black & Green Nickel Oxide-Supplemental

A previous question (April 2017) asked about black $\ce{NiO}$ did not supply any answer. Sadly, such a referral only deters colleagues from commenting on the current question. There is a great deal ...
-1
votes
0answers
20 views

Is the black carbon powder useful for preparing printers black ink(water-inks)? [closed]

I need to prepare black water ink for printers. Is The carbon black powder is the right pigment to create black water ink for printers. What are the specifications of the perfect black carbon powder ...
5
votes
0answers
58 views

Activators for non-sulphide compounds in froth floatation

I was recently studying about Metallurgy. Concise Inorganic Chemistry by J. D. Lee claims the process of froth floatation can also be applied to non-sulfide ores such as Malachite ($\ce{CuCO3.Cu(OH)...
-2
votes
0answers
29 views

Why at lower pH than pKa, acid doesn't dissociate to give H+ ions [closed]

I understand mathematically that pH lower than that of pKa, acid will be present in undissociated form but can anyone explain it qualitatively (logic) why it is so?
0
votes
0answers
22 views

Do any decent thermochemical databases exist? [duplicate]

The more thermochemical properties the better, but specific heat/ specific heat capacity is what I am looking for.
0
votes
0answers
24 views

Why does ammonia have higher melting point but lower boiling point than HF? [duplicate]

I guess the reason is hydrogen bonding, but shouldn't both the trends be similar in that case?
0
votes
0answers
20 views

Why does the dipole moment order of group 15 hydrides increase down the group?

The order given in my book is NH3>SbH3>AsH3>PH3 Phosphorous is more electronegative than As and Sb then shouldn't the dipole moment be more in case of PH3 . And why does the anomaly of NH3 occur?
1
vote
0answers
24 views

Determining the composition of basic copper sulfate by titrimetry

A colleague shared an undergraduate level classical gravimetry/titrimetry experiment on determining the stoichiometry of basic copper sulfate. I am looking for a reference for this type of experiment. ...
-1
votes
1answer
28 views

Exact weights for a chemical reaction og Silver and Nitric Acid [closed]

I'm an amateur analog photographer and want to react Nitric Acid (62%) and silver to Silver nitrate. Silver nitrate is the basis for almost all black and white photography. I'm trying to figure out ...
0
votes
1answer
49 views

Why the formation of PH4+ is difficult compared to NH4+?

My textbook asks this as an objective question. What I had in mind was that the lone pair on phosporous was more distributed as compared to nitrogen(since nitrogen is more electronegative and smaller ...
1
vote
0answers
16 views

How to extract melanin from human hair [closed]

I am working on a project wherein I am studying various properties of human hair and its utilization..I would like to know method by which we can extract melanin from human hair. Can anyone suggest ...
1
vote
0answers
25 views

Measuring change in concentration of hydrogen peroxide

I am conducting an experiment to find the rate constant of the decomposition of hydrogen peroxide, $\ce{H2O2}.$ For this, I was planning on using the integrated rate law: $$\ln(\text{final ...
6
votes
1answer
99 views

How does the energy released during a bond formation typically manifest itself on atomic level?

Chemistry newb here. I've been reading about how energy is released when new chemical bonds are formed but it's hard to find info on how that typically manifests itself (besides that it's via heat). ...
3
votes
1answer
104 views

Rechargeable Battery Based on Neutralization Reaction of Acid and Base [closed]

The neutralization reaction, such as $\ce{HCl + NaOH → NaCl + H2O}$, generates heat, which is around $\pu{57.30 kJ/mol}$. Can we use this energy to design a battery? This idea occurs in my mind for a ...