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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How can a v/v% of ferric chloride hexahydrate be stated as a v/v% of ferric chloride?

I have the SDS sheet for a chemical solution where the $v/v\%$ is stated as 62.7% for ferric chloride hexahydrate ($\ce{FeCl3.6H2O}$) and I need to find the $v/v\%$ for ferric chloride ($\ce{FeCl3}$) ...
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Splitting carbon dioxide into carbon and oxygen [closed]

Would it be possible to split $\ce{CO2}$ into carbon and oxygen? We know that through the process of electrolysis ionic substances can be broken down into the elements they are made from by passing ...
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Effective Atomic Number stability comparison for equidistant values

EAN(Effective Atomic Number):- The amount of electrons around the central ion. EAN=(Atomic number - oxidation state)+(Number of electrons donated by ligands) Sidgwick's EAN Rule:- Sidgwick suggested ...
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How to use Sodium Thiosulfate for fixing dicopper (I) tetraiodomercurate (II) and mercury (II) iodide?

DISCLAIMER DO NOT TRY TO DEMERCURATE USING DESCRIBED PROCEDURE. CONSULT YOUR EMERGENCY SERVICE. I found a discrepancy between a government-approved procedure of living quarters demercuration and the ...
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Potassium permanganate structurre

So I'm learning about Lewis structures for university. I was reading a book written by some teachers from my university and in one exercise they ask us to draw the Lewis structure for potassium ...
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What is left over when water and sodium hypochorate decompose, i.e. household bleach? [duplicate]

I am having some confusion in understanding the decompostion of household bleach. One website says bleach decomposes to salt and sodium chlorate, simple enough. Orther wedsites say bleach decomposes ...
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Invisible spin allowed transitions in Tanabe-Sugano diagrams

In class we are looking at Tanabe-Sugano diagrams, more concretely at transitions for a d2 complex. I understand that the only spin allowed transitions are those that have a triplet state, therefore ...
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What is the difference between boron trioxide and boric anhydride?

In my chemistry textbook, both boron trioxide and boric anhydride given under the same formula ( B2O3 ), so why are there names different? I tried googling the question but didn't find any ...
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Calculate concentrations of ions after acid-base reaction given volumes and concentrations

A $\pu{35.0 mL}$ of $\pu{4000 ppm}$ $\ce{HCl}$ solution is mixed with $\pu{45.0 mL}$ of $\pu{0.1025M}$ $\ce{NaOH}$ solution. Assume volumes are additive. $$\ce{NaOH(aq) + HCl(aq) -> NaCl(aq) + H2O(...
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Does 50% hydrogen peroxide dissolve gold?

We have seen that the silver electrodes on a piezo element are being seemingly dissolved by exposure to our mixture of $50\,\%$ hydrogen peroxide. I was wondering if we were to switch to gold ...
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Should I be worried about the waste from “sugar rockets” and other potassium nitrate fireworks?

"Sugar rockets" or sparklers made of metal fillings, potassium nitrate and some carbon compound are easily made, and there is a lot of tutorials and videos on the internet suggesting them as ...
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If X is not salt, then what is X? [closed]

I have a homework : Cu + Cl2 = X. The reaction occurs under ideal conditions. If X is not salt, then what is X?
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Energy level of molecular orbitals in heteronuclear diatomic compounds

I have been studying the molecular orbital theorem. I read that the energy levels for the $\ce{p}$ orbitals in the first series of $\ce{p}$ block molecules are something to the tune of $$\pi_x=\pi_y&...
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Why is the disordered CuAu structure more stable at high temperatures?

I know that the disordered CuAu structure is based around FCC whereas the ordered CuAu structure is tetragonal. Why would the FCC structure be more stable at high temperatures? For context, I was ...
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Why doesn't the $5s$ orbital involve in $sp^{3}d^{2}$ hybridization?

Consider a co-ordinate complex like $[CoF_{6}]^{-3}$ for example. Here the hybridization is $sp^{3}d^{2}$ by the Valence Bond Theory, as illustrated also in this solution to a question on the same: I ...
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Copper plating with electrolyte not working (Cu(OH)2 vs CuSO4)

I've been experimenting using electroplating, and I recently made a solution by placing two copper pieces connected to a voltage source, in water. I suspect that this created copper(II) hydroxide, as ...
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Struvite Crystals: How does it form?

I'm in general chemistry, and I was wondering how ionic species crystallize and form the shapes they do, specifically in regard to the Struvite precipitate $\ce{MgNH_4PO_4. 6H_2O}$. Deconstructing the ...
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Reaction between magnesium metal and sodium hydroxide: Does this even happen?

Came across this question in a book: Among aluminum, zinc, tin and magnesium, which metals (if any) will react with an aqueous solution of sodium hydroxide to displace dihydrogen? The answer to ...
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Equivalence point pH derivation of a tribasic acid

Considering $\pu{100 mL} \ \pu{0.1 M} \ \ce{H3A}$ and $\pu{0.1 M} \ \ce{NaOH}$ titration curve: I understood the half equivalence points, but couldn't understand the reason why $\mathrm{pH} = \frac{1}...
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If the current is kept to zero in a potentiometric cell then how do electrons move from one electrode to the other?

If the current is kept to zero then how do electrons move from one electrode to the other electrode? How would the reduction happen if electrons don't move from one electrode to the other electrode?
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700 views

What is the role of hydration enthalpy in oxidation?

My textbook says that the greater oxidising behavior of fluorine than chlorine can be attributed to the high hydration enthalpy of $\ce{F-}$ ions and the low dissociation enthalpy of $\ce{F-F}$ bond. ...
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Cinnabar decomposition by heating optional method?

Is it possible to decompose cinnabar into $\ce{Hg}$ and $\ce{S}$ instead of $\ce{Hg + SO2}$ with roasting and heating. What conditions need to be satisfied in the new method?
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Is there a literature value for the activation energy for the reaction between sodium metabisulfite and potassium iodate

I am doing an experiment where I perform an iodine clock reaction between sodium metabisulfite and potassium iodate. I have an experimental value for this reaction but I need a theoretical literature ...
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What is an effective coagulant/flocculant for an acidic solution?

The acidic solution is a mixture of dissolved ammonium sulfate and mono-ammonium phosphate (pH about 4.5-4.8) along with an inorganic sludge with a similar consistency to clay I am looking to remove ...
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Equilibrium of zinc ion with ammonia

In my chemistry lab, we are testing the amphoteric properties of this metal. I understand zink can react with an acid or a base to form different compounds in solution based on pH. In one part of the ...
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113 views

Are we technically reducing electrodes/wires for the instant that an electron passes through them?

In lecture I was taught that, in a galvanic cell at standard conditions, platinum is often used as an inert electrode when the species being oxidized or reduced exists only in solution, because ...
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In the aquation of cis-platin, why are the chloride ligands, and not ammonia, replaced with water, despite chloride's larger trans effect?

https://doi.org/10.1021/ic000847w In this paper, the aquation of cisplatin is examined. When used to treat cancer, the chlorides are substituted with water molecules, which seems to go against the ...
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Reactivity of group 13 elements with nitrogen

Do all group 13 elements react with nitrogen to form nitrides of form $\ce{MN}?$ J.D. Lee's Inorganic chemistry book mentions the following: Aluminium burns in dinitrogen at high temperatures ...
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Why do both bonding and antibonding molecular orbitals exist at the same time when two waveforms could only be in-phase or out-of-phase? [closed]

I am quite confused concerning the existence of both bonding and antibonding molecular orbitals. I understand from previous posts that the number of orbitals has to be conserved, and thus when two ...
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Can you dissolve latex balloons to remold into other latex objects?

I want to take balloons from the dollar store and dissolve, then reform them into complex shapes (like a human head) balloons. Is this possible?
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Why is the increase in covalent radius from As to Bi not as big as from N to P?

The following is the radius of Group $15$ elements: $$\begin{array}{c|c} \hline \text{Element} & \text{Covalent Radius }(\pu{pm}) \\ \hline \ce{N} &75 \\ \ce{P} &110 \\ \ce{As} &...
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Is there a mnemonic to study the spectrochemical series?

Mnemonics help to by-heart things which are difficult to do so and which are important. I found mnemonics for studying the periodic table, electromagnetic series etc which were of great help. So, is ...
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Finding a Mistake Calculating the pH of Ammonium Acetate

I'm trying to calculate the $\mathrm{pH}$ of a $\pu{0.10 M}$ solution of ammonium acetate, and I am struggling to find what mistake I am making within the following calculations: We know that $\dfrac{[...
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Net direction of dipole moment in oxygen difluoride

What is the net direction of dipole moment in $\ce{F2O}$ molecule? In the case of $\ce{NH3}$ and $\ce{NF3}$ molecules both have net dipole moment with direction reversed due to strong ...
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Why do only some metals make protective oxide layers?

Almost all Alkali metals and Alkaline Earth metals react with air to form their respective oxides, but why does only Magnesium forms a protective oxide layer? What properties of magnesium oxide allow ...
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Is [Fe(OH)(H2O)5]+ more likely to be oxidized than [Fe(H2O)6]2+?

I want to know if the $\ce{[Fe(OH)(H2O)5]+}$ ion formed upon adding water to $\ce{[Fe(H2O)6]^2+}$ is more likely to be oxidised to $\ce{Fe^3+}$ than $\ce{[Fe(H2O)6]^2+}$. If it is, then why?
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How can platinum function as an “inert electrode” while having a standard reduction potential of 1.2 from its 2+ oxidation state?

In lecture I was taught that, in a galvanic cell at standard conditions, platinum is often used as an inert electrode when the species being oxidized or reduced exists only in solution, because ...
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Allotropic varieties by atomicity

Are oxygen and phosphorus elements that have allotropic varieties due to atomicity? There are $\ce{O2}$ (oxygen gas) and $\ce{O3}$ (ozone gas), as well as $\ce{P4}$ (white phosphorus) and $\ce{P_n}$ (...
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D-orbitals of point group C2v

I'm trying to construct an MO diagram for cisplatin, which has C2v symmetry. However, there is no Mulliken label for the d(x^2-y^2) orbital in the character table. Does this orbital not form molecular ...
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Getting an “index” of 7 for a Set of Powder Diffraction Data

I know a value of $h^2 + k^2 + \ell^2 = 7$ is not allowed but I cannot understand where I am going wrong with the indexing here. Any insight would be greatly appreciated as I am wondering if this is ...
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Color of Flame Test for Alkali Metals

Lithium is known to have the highest ionization energy among Group 1 elements. Also, characteristic colours in the flame test arise due to the excitation and de-excitation of electrons. Then why ...
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How does the force constant change when a heavier atom is used in vibrational spectroscopy?

(iii) The fundamental band in the IR spectrum of $\ce{^1H^{127}I}$ is found at $\pu{2308 cm^-1}.$ Calculate the force constant for the bond. Assume the molecule can be treated as a harmonic oscillator....
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How do acids prevent ferrous sulfate from getting oxidised?

If $\ce{FeSO4.7H2O}$ is dissolved in an acidic environment, for example in 0.05 M aqueous solutions of methanoic or ethanoic acid, would that prevent it from getting oxidized if an oxidizing agent ...
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Comparison of C=O bond strength in metal carbonyls

Find the weakest $\ce{C=O}$ bond among $\ce{[Mn(CO)6]+},$ $\ce{Fe[(CO)5]},$ $\ce{[Cr(CO)6]}$ and $\ce{[V(CO)6]-}.$ I thought the $\ce{C=O}$ bond strength would be lowest in $\ce{[V(CO)6]-}$ since the ...
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How to find the equilibrium constant under non-standard conditions?

Given the following thermodynamic data at $\pu{298 K}:$ $$ \begin{array}{lrrr} \hline \text{Compound} & \Delta_\mathrm{f}H^\circ/\pu{kJ mol^-1} & S^\circ/\pu{J K^-1 mol^-1} & C_p^\circ/\pu{...
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Maximum absorption wavelength directly proportional to the donor number of the ligand for a copper(II) coordination complex

I am looking at a set of results showing a directly proportional relationship for an increasing maximum absorption wavelength (UV-Vis spectra) with increasing donor number of solvent ligands. The ...
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H2SO4 + NaCl Need help with the reaction [closed]

I wanted to make some HCl so, I reacted dilute H2SO4 was bought from the battery shop and iodized salt together, but I get a yellow solution that's acidic in nature. I am not sure about the purity of ...

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