All Questions

I'll be doing sequential extraction on ash samples, and I'm not sure whether the procedure indicates to adjust the pH of the reagent or the pH of the mixture (reagent with sample)? I copied and pasted ...

Will a Friedel- Crafts acylation take place on ortho-bromotoluene? I do understand that Friedel Crafts reaction does not occur when there is an electron withdrawing group on the ring but is there any ...

This was in a paper I gave. I want to know the mechanism by which both of these products will be formed and why is the 1st one the major product. My thinking is that the -OH group will be converted ...

I noticed that when I attempted to dissolve some pure alpha glucose powder in water, it would become hard and clump at the bottom of the beaker if I dumped it into the beaker all at once. It was ...

I added a nail polish remover substitute (main ingredients: methyl acetate, isopropyl myristate) to krazy glue (cyanoacrylate) that was stuck on a surface of painted metal (and some plastic parts). It ...

I'm learning about the process of dissociation. I'm aware in dissolution that essentially three processes occur (I know I may be simplifying it, but I am in Year 11): Solute particles break apart (...

According To me it wouldn't form para bromo benzene as FeBr3 is a lewis acid and form dative bond with oxygen atom and it will form -HO-Fe(Br)3+ and its meta director as well as deactivating group so ...

Considering circumstances where the water bottle is indoors at room temperature and not exposed to any extreme heat or forms of impact. How would the BPA separate from the plastic into the water?

Can the Internal Energy of a system change without changing it's temperature? And why in isothermal expansion of a gas the change in internal energy is zero?

I have a quantity of Silvadene or Silver sulfadiazine. I’m wondering if anyone knows how to extract pure silver from it. Thanks in advance.

While studying Crystal Field Theory, it was said that low-spin complexes only form when the Crystal Field Splitting energy exceeds the pairing energy of electrons. What I infer from this is that it ...

I am new to chemistry so this might be about a very easy concept that I might be misunderstanding but I would appreciate your help! I watched a video of combining hydrogen and oxygen and forming water....

I was planning to extract citric acid from mango juice by first using Aspergillus niger fungus by fermentation to convert the mango juice to citric acid, then extracting by first adding sodium ...

Is there anything that could be done to preserve/stabilize acrylic objects on long-term timescales or is decomposition inevitable?

According to my professor $d_{z^2}-d_{z^2}$ sigma bond is stronger than $p_z-p_z$ sigma bond as the extent of overlapping is more in $d_{z^2}-d_{z^2}$ overlap, because of directional nature and of $...

Materials and Apparatus: wheat flour sugar dry yeast glass bowl covering plate milk Procedure: Lukewarm milk is taken in the glass bowl and sugar is added to it. Then, yeast is added to the same. ...

I am confused with some results I am getting. Given a molecule (In particular, I was toying with triangulenes, some benzenoids and things like that, but this is not very important), I perform first a ...

Fractional distillation has an ability to separate substance with less than 25 Kelvin difference in their boiling points. But how? There’s a fractionating column with glass beads. But I can’t ...

According to Wikipedia, tennessine has an electron affinity (EA) of $\pu{+166 kJ mol-1}$ and nihonium $\pu{+67 kJ mol-1}$. Normally this would make sense since tennessine is in group 17 and nihonium ...

My textbook says the following on Etard's reaction: Now, if the alkyl group attached to benzene is an unsymmetrical or branched alkyl group, such as this: What will be the reaction product(s)? Which ...

I am searching for reactor set-up that can maintain inert atmosphere, and found that many organic synthesis labs use Schlenk line. But organic synthesis is not main thing of my lab, so there is some ...

Scuba diving means diving underwater with the help of diving equipments. Scuba divers can dive upto 65-90ft underwater. The pressure of seawater at a depth of 33m below sea level is equal to 1atm. The ...

I know that aliphatic alcohols react with reagents like $\ce{PBr3},$ $\ce{PBr5},$ $\ce{SOCl2}$ etc. to give alkyl halides as a product. But what will happen if we put aromatic alcohols like phenols ...

If a polyethylene chain contains hydrogen at its ends, isn't it just an alkane with an even number of carbons? Is there any distinction between polyethylene and even alkanes that I'm missing?

Hi I came across N2O4 in my organic chemistry class and before I could ask, my teacher went ahead, so can someone please help me out and tell me what N2O4 is used for?

I was studying my textbook and I stumbled upon this part. The irregular trend in the first lonisation enthalpy of the 3d metals, though of little chemical significance, can be accounted for by ...

Does increasing the length of the alkyl group attached to a central carbon have an impact on the bond angles of the tetrahedral structure of the central carbon (the alkyl groups being methyl, ethyl, ...

Professor Robert Winston once removed a blue alkaline stain using carbon dioxide from a fire extinguisher on James Corden's show. Here's the link for the episode I would like to know if there is a way ...

How can we judge possibility of oxidation by seeing the oxidation potential? OR What is the relation between Standard oxidation potential (S.O.P.) and quality of oxidation ? By quality I mean the ...

I bought some Pedialyte freezer pops for my kids: And I've noticed that after spending a long enough time in the freezer, the purple "grape" pops change color from purple to green: After ...

I have a question. We are producing 71% denatured ethanol (denaturants - less than 1%: MEK, denatonium benzoat and IPA). We add glycerine as a hand moisturizer inside and pH is stabilized with citric ...

I think cyclohex-2-en-1-one and cyclohex-3-en-1-one should undergo tautomerism as shown below: I'm calling it tautomerism because of it's similarity with the tautomerism mechanism in basic medium. I ...

For example if I have a table with these data How can those data be compared with each other to find heat of solution of $\ce{KI}$?

Taken from the book of GOC by Dr. O.P Tandon, Himanshu Pandey, Dr. A.K. Virmani, Can anyone elaborate on the mechanism?

If 20gm of ammonia gas is dissolved in 1 liter water, then what will be the concentration of the solution?

Zinc, cadmium, mercury and copernicium belong to the group 12 of the periodic table. In my textbook , it is mentioned that zinc, cadmium and mercury are d-block elements, but not transition metals. ...

Usually when we write the orbital diagram of elements, we fill the empty orbitals with up-spins and then after all the slots for a particular $l$ is filled, we pair the down spins as well. But, could ...

what exact changes does sp mixing bring about to molecular structures which leads to the 𝝅2px=𝝅2py orbital being filled before the σ2pz orbital?

An ion with mass number 37 possesses one unit of negative charge. The ion contains 11.1% more neutrons than the electrons in its nucleus. An ion with a mass of 37 has % negative charge compared to % ...

My teacher said that the if more heat is given, it is easier to distort the electron cloud of anion. Is this correct?

I'm guessing its not a good idea, since iron will then corrode easily (also depending on the location and environment), Although copper do not rust it will increase the rate of it from oxidizing. plus ...

I have many confusions regarding optical isomerism: What is the use of the R/S nomenclature? I understand that it is used to distinguish between the different spacial arrangements that are possible ...

$\ce{LiAlH4}$ is a strong reducing agent capable of breaking the double bonds. It does break the double bonds in cinnamaldehyde. Shouldn't $\ce{LiAlH4}$ be able to break the double bond in ...

chitosan (200 mg) was dissolved in 20 mL of 1.25% acetic acid solution, and VES (600 mg) was dissolved in 25 mL absolute ethyl alcohol followed by the addition of a suitable amount of EDC, what is the ...

My Russian born wife recently asked me to buy her a skin remedy widely used in Russia. In English this is the oil of a plant called Sea Buckthorn. It is a thin yellow liquid. My wife put some of this ...

This seemed like a trivial question to me... until I began to think about it. The "usual" criteria for greater acidity are larger sizes of the atom attached to the acidic proton within the ...

A piece of iron of mass 0.27kg is immersed in a boiling water and and dropped into 0.10kg alcohol at 27°C. If the final mixture is 50°C, what is the specific heat capacity of the alcohol? (Specific ...

Hi there I am doing an experiment of uv assay of Dextromethorphan hydrobromide where its run under uv in two solutions an acitic acid and sodium hydroxide the uv results showed that both solutions had ...

I recently came across a question where naphthalene undergoes oxidation with sodium dichromate in presence of sulfuric acid. The given options were benzoic acid, phthalic acid, decalin, and tetralin. ...

I need to calculate information about the (hypothetical) square-planar form of the tetraamminemagnesium(0) molecule as a reference to my personal QC research project; everything goes fine until we go ...