All Questions

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Which one is more acidic?

According to me, second one should be more acidic as there is no competitive resonance as in the first one. Which is correct?
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What is the solubility of Quinine suphate in 98% ethanol?

Hello to my fellow chemistry seniors and friends, i'm an undergraduate of Pharmaceutical science and i'm here because i have a result from an experiment that really bothers me yet i found no sources ...
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It says that there must be 11 resonance structures, but I can get only 6 by shifting the double bonds and positive charge. And none of them are aromatic.
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Reactions of Elements

Why doesn’t chlorine react as a single atom (Cl) but rather as a diatomic molecule (Cl2)? In other words why can’t chlorine react as a single atom? For example, we write the reaction between sodium ...
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What is the reaction between sodium hydroxide and sucrose?

Is the product inert, and can it be injected into the bloodstream without any negative effects?
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Degree of Freedom

I have read that degree of freedom is given by F=2+C-P Where F: Degree of freedom C: Number of components P: Number of phases Component is defined as, “the minimum number of independent ...
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Can a solid have a vapor pressure without the ability to sublimate?

Does sublimation occur when a solid turns into a gas and THEN vapor pressure is produced or does the solid first have a vapor pressue and then when the vapor pressure of the solid equals the ...
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Why does the neutralisation of any strong acid in an aqueous solution by any strong base

Why does the neutralisation of any strong acid in an aqueous solution by any strong base always result in a heat of reaction of approximately –57 kJ mol−1?
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Question related to KMnO4

Why in acidic medium $\ce{KMnO4}$ oxidizes $\ce{KI}$ ($\ce{I-}$) to $\ce{I2}$ but in alkaline medium to $\ce{IO3-}$? $\ce{KMnO4}$ is a stronger oxidising agent in acidic medium then why doesn't it ...
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Comparing Stability of Carbocation

How do we decide which is more stable alhpa ether carbocation or benzyl carbocation? I thought benzyl carbocation has more resonace structures and will be more stable. But the answer is alhpa ether ...
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Angular Momentum Quantum Number and Orbitals

In our lecture I was told the angular momentum QN is equal to $n - 1$ of the principle QN, which corresponded to the orbital shape. How is this case, for example in Barium the principle QN is 6 with,...
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Experimentally find out if an ionic compound contains a hydroxide or a chloride?

I am working on designing a lab, one of the things that I have to do is figure out whether an unknown ionic compound (aqueous state) contains a hydroxide or a chloride. I have to be able to prove it ...
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Best efficiency for CSTR reactor between Sodium Hydroxide and Ethyl Acetate reaction?

I am doing my pre-lab understanding session before my lab session on CSTR. In the reactor, the reaction going in is sodium hydroxide + Ethyl Acetate. I was given 4 options on which is the most ...
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What is the skeletal formula for S-2-fluorobutane?

Ok so i came up with this formula. Is it correct? If not, can you please help me understand it. Thank you
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What is the skeletal formula for Z-3-bromohept-3-ene? [on hold]

Can anyone please help me with drawing this and explain it to me? Studying online and it’s quite hard. Will be apreciated, thank you.
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How do I know WHICH atoms in a molecule hybridize?

For example, think of BF3. The B has 3 sigma bonds and 0 lone pairs, 3+0=3 orbitals, so B has an sp2 hybridization. But each F has 1 sigma bond and 3 lone pairs, 1+3=4 orbitals which would be sp3 ...
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How to prepare gem dihalides from alkenes [on hold]

How do i prepare gem dihalide from an alkene. .
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Using a significantly large metallic sphere, could we draw out the electrons from the negative terminal of a battery?

I've pored over many articles on electrochemical cells, and I understand that on the oxidation side of a zinc-copper Daniell cell, the anode is highly negatively charged because zinc participates in ...
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chemical equilibrium and exothermic reaction

here is an interesting question about the chemical equilibrium and Le Chatelier's principle. the following pressure show the partial that produced in the equilibrium reaction at time (t1 and t2) \...
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Thermodynamics question [on hold]

Can anyone please tell the origin of this thermodynamic equation G= H - TS I know dS=(dG/dT) at constant pressure but how does this equation originate I cannot find anywhere . Like how does this come ...
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Finding Formula from combustion data [on hold]

10 cm3 of a gaseous hydrocarbon was mixed with excess oxygen and ignited. The gas volumes were measured at room temperature and pressure before and after combustion and it was found that the total gas ...
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Nomenclature and structure of pent-2-en-4-yne and pent-3-en-1-yne [duplicate]

What are the bond line structures of compounds pent-2-en-4-yne and pent-3-en-1-yne? I have one structure and confused in its name. I tried but I am unable to upload its image here. If it follows ...
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Sythesis of Diclofenac [on hold]

I'm searching for the sythesis of Diclofenac and found the picture below. Can anbody tell me how the two ways of the reaction (a and b) works? And what are the most relevant mechanisms. I also ...
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Where will the positive charge shift in the E1 mechanism of dehydration of an alcohol? [on hold]

My Attempt: according to me the double bond should be in position no. 2 but the correct answer has a double bond in position no.1. Why is it so? Thanks in advance.
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What is the reaction mechanism of aromatization of alkanes? [on hold]

In my textbook it is given that when n-alkanes having six or more carbon atoms is heated at 773K at 10-20 atmospheric pressure in the presence of oxides of vanadium, molybdenum or chromium supported ...
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If the net ionic equation and complete equation balance differently, which one do you use? [on hold]

Sometimes the full equation of a reaction and the net ionic equation balance out differently. If that is the case, which is the correct one to use? For instance, in the reaction between a solution of ...
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Why is Buna-S called so?

Styrene Butadiene synthetic rubber is also called Buna-S. It is the abbreviation of Butadiene (Bu) Sodium (Na) Styrene (S). Why is Sodium included?
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Making my plant blue [on hold]

I'm trying to make a plant blue. could I somehow combine Azulene pigments in my plant and make it turn blue? I haven't tried anything yet but based on my research blue plants are pretty rare almost ...
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Draw a detail mechanism for the formation of 1,1'-diacetylferrocene from ferrocene by using Friedel Craft acylation [on hold]

Draw a detail mechanism for the formation of 1,1'-diacetylferrocene from ferrocene by using Friedel Craft acylation
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Q-chem equivalent solvent settings for Gaussian NMR ab inito methods

I'm attempting to use Q-Chem 5.0 to replicate CHESHIRE-esque http://cheshirenmr.info/ ab initio calculations of chemical shift values. Unfortunately Gaussian seems to be the predominant tool in this ...
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pKa of 2-fluoropropanoic acid v. 3-fluoropropanoic acid [on hold]

How would you compare the pKa of 2-fluoropropanoic acid v. 3-fluoropropanoic acid? Structures are below:
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Why does cooked liver turn green after a while?

I've noticed that cooked liver tends to turn green if not consumed shortly after cooking. The picture below shows cooked pork liver with green patches which developed after being chopped into pieces ...
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Can aromatic rings be cyanated using cyanide as a nucleophile?

For example, can I convert chlorobenzene into benzonitrile by using potassium cyanide as the reagent?
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Isomerism:Which of the following pairs of compunds are not position isomers? [on hold]

Which of the following pairs of compunds are not position isomers?
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Graph of catalysed reaction

Why is the graph of catalysed reaction like this? If I am not wrong, the product is formed ONLY at the flat section and not at any point along the downward curve. Using catalyst,only the amount of ...
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Conversion from gram/Liter to gram/100mL [on hold]

I have a quick question about how you convert for example 1.69 gram/Liter to gram/100mL. I know that you can just divide by 10 but what is the unit for the 10? Is is just 10mL?
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The energy of ATP phosphate bonds [duplicate]

It is my understanding that there are two principal ways of how energy of bonds can convert into other kinds of energy: It's released as photons when electrons change their states - and photons can ...