All Questions

Why not just two chlorine atoms added about double bond?

I want to calculate the effective diffusion coefficient of hydrogen radical in a mixed-phase consisting of metal oxide, metal hydride and metal. I consider the interfaces to be diffuse. How can I ...

What is an easy way to find the major and minor products of oxidation of hydrocarbons with various reagents ?

I'm wondering why more electronegative substituent (like Cl) beta glucose with equatorial orientation is prefered over alxial? If it's linked with anomeric effect , how?

I am studying ABX3 perovskites, and I would like to calculate Goldschmidt tolerance factors for them. The A sites in these materials have a coordination number = 12. The Shennon's paper (R. D. ...

I just cleaned what looked like algae out of a circulating bath made by Laura. I am not sure how to minimize their return. I may have used a mixture of ethylene glycol and water in the past. This ...

Consider a complex K2[Cr(CN)2(O)2(O2)(NH3)] How would you find the oxidation number? Can't (O2) mean dioxide, Superoxide,peroxide which one should I choose ?

I am totally confused about the bonding in $\ce{[Cu(NH3)4]^2+}$. Here are the thoughts that I had when I first attempted the problem: $\ce{Cu^2+ = [Ar] 3d^9}$ Due to crystal field splitting, $\ce{...

I have searched for the entropy of copper nitrate in various tables across the internet* and all I could find was its Hf. Ullmann also didn't give an any better clue. If it was not measured and ...

I have try all this questions and I just want to confirmed my answers. 1. 60.83L 2. 44.90% 3. 8.59% (https://i.stack.imgur.com/YNH2g.jpg)

I am not sure I completely understand the bonding in coordination compounds formed by donation of pi electron cloud by the ligands to the central atom. For example, consider Ziese's salt: I came ...

What type of buffer is it? If it's a Weak Acid-Conjugate Base type of buffer, what is the weak acid and conjugate base?

So, we just finished an AP chem lab where the question was basically: Given the results of the lab were that $\pu{5 grams}$ of $\ce{CaCl2}$ and $\pu{45ml}$ of water produced a $\pu{13.33 ^\circ C}$...

Plz answer 233 question its related to physical equilibrium

What is the relationship between polarity and boiling point? How would I use that knowledge to answer this question: $\ce{CH2F2}$ has a dipole moment of $1.93\, \mathrm{D}$ and a boiling point of $–...

Has anyone ever used this Micro Zippette Hand-Held Dispenser? I found it on an online chemical store brumer

how can I prevent the evaporation of ethanol in a closed system circulation of a mixture of ethanol and water which a high temperature reaches to 70 c?

Can somebody explain to me how to calcute the dosage in powder? The powder (125 g) of each plant were macerated in 200 mL of distilled water for 12 h at room temperature and were then filtered to ...

I was doing an experiment on gold recovery. When I added some gold platted pins to battery acid nothing seemed to happen.I impatiently added some duluted hydrochloric acid labeled 20%, immediately ...

I've tried looking this up and can't seem to find the solubility of SDS if any one knows the answer I would really appreciate it. Which is more soluble in water ammonia or Sodium dodecyl sulfate. ...

Benzyne consists of three resonance forms (aryne, cumulene and diradical). Is benzyne itself aromatic? And what about its triple bond and diradical forms?

$$\ce{H2C=CH-CH=CH2 <-> H2C=CH-\overset{+}{C}H-\overset{-}{C}H2}$$ Is this a correct resonance structure? Almost all the books just mention this $$\ce{H2\overset{+}{C}-CH=CH-\overset{-}{C}H2}$$ ...

Analysis shows that nickel oxide has the formula $Ni_{0.98}O_{1.00}$. What fractions of nickel exist as $Ni^{2+} $and $Ni^{3+}$? What i did: Let the number of $Ni^{2+}$ and $Ni^{3+}$ atoms be $x$ ...

In the following reaction of 2,3,4-tribromopyridine with sodium methoxide in methanol,[1] why are only the C-2 and C-4 bromines replaced with methoxy groups? Why doesn't the bromine at C-3 also get ...

I am working for PEM fuel cell cathode material. I am confused regarding the onset potential determination for my catalyst (CV attached, fig 1 is complete CV while fig 2 is its zoom image for clear ...

I was trying to understand stereoisomerism. I am having trouble creating a 'flow chart' of Stereoisomerism. While there are many sources available over the internet and books, I don't find a standard ...

I am trying to use IR spectroscopy to measure total protein in blood. Urea creates a interference in that range. I thought about precipitating urea to reduce its interference but how can i do that?

Does resonance occur in 1-3 Cyclobutadiene? There is π- π conjugation present in the system, however, unlike Benzene, the bond lengths are not equal, and the molecule is not a perfect square. Why? 

Usually Lewis bases as my textbook says: According to me its not compulsory for a ligand to be a Lewis base, as $\ce{BF3}$ is a Lewis acid and can act as a ligand by accepting electrons from a ...

I've come across a question that says: Which of the following compounds can we use with excess of NaOCl in order to produce benzoic acid? The compounds are: isopropanol, acetophenone, benzhydrol ...

I want to separate $\ce{Na+}$ ion and $\ce{Cl-}$ ion from $\ce{NaCl}$, how can I do so easily, after the separation how can i get negatively charged chlorine into a separate container? Will the ...

Explain Enthalpy concept and about how to calculate heat of neutralization, bond energy, combustion etc

s-s sigma(head-on overlap) bonds are weaker than s-p sigma bonds which are again weaker than p-p sigma bonds. But shouldn't it be the other way around as s orbitals have higher penetration power than ...

I'm beginning with quantum chemistry and I'm supposed to do some ab initio calculations with Molpro. The problem is, I don't understand the orbital specification very well. Let's say, I have the ...

I am leading a project in which I am attempting to synthesize 4-oxooctanoic acid in a (mostly) biological pathway. Currently, I have reached a dead-end. I have a way to create octanoic acid through ...

I'm confused about the crystal system of MoS2. In the case of the monolayer MoS2, it has 3-fold rotation symmetry when viewed from the top of its unit cell (c-axis). Even in the case of bulk (AB ...

I am not able to identify, what suffix should I use in these two compounds. Please also explain the method of finding it.

For example if there was a Cl and CH3 off of carbon one and an ethyl off of Carbon 3 in the cyclohexane ring

I thought that as option (d) has more number of double bonds in conjugation, it will stabilize the anion better . But the answer given is (c) .Can somebody please explain? I tried to draw the ...

Yields of product(alkanes) are best for 1°(60%) and least for 3°(10%) alkyl halides. Can methyl halides be used in Wurtz reaction? Would it produce a good yield?

In the $\ce{H_2O}$ molecule, oxygen has $10$ electrons ($2$ inner plus $6$ valence plus $2$ electrons from hydrogen) and $8$ protons therefore it should have $2-$ charge, but it doesn't.

Why does removing ammonia from product mixture before reaching the yield of 20% can increase the amount of NH3 produced per unit time?

It is given in my book that nitric acid oxidizes graphite to either mellitic acid (Benzene Hexacarboxylic acid) or, with additional HF, graphite oxide. Can somebody suggest a mechanism for this ...

A question recently asked here whether compounds know to be chiral can have non-measurable optical rotations: Are there chiral compounds that don't rotate plane-polarized light?. Apparently they ...

I am questioning the answer key of an exam question my chemistry professor has given, because I think there is a flaw in the methodology of the exam answer. I have worked out my solution using my ...

Is there a known gas that would combust by there mere action of mixing with oxygen? So, we could put this hypothetical gas in a balloon, and if the balloon popped, it would combust and explode.

Lots of my Nanotechnology colleagues are asking about understanding impedance in my Electrochemistry course. Can anybody let me know what is the importance of understanding relationship between ...

How can we find the molar fractions of n2 and o2 given that the whole gas has a density of 1.4 g/l at stp? I have seen solutions of this problem that first calculate the mass per volume of the ...

Nitrogen forms a number of compounds with oxygen, for example nitrous oxide, N2O, is 63.65% N by mass. A second compound, which contains two atoms of nitrogen per molecule, is 25.94 % N by mass.How ...

I know that meso compounds have chiral centers but don't rotate plane-polarized light, and I know that there can be non-traditionally chiral compounds (e.g. ones with large substituents that prohibit ...