0
votes
1answer
10 views

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?
0
votes
1answer
9 views

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 ...
0
votes
0answers
11 views

Trouble drawing resonance structures. Please help me understand

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.
0
votes
0answers
12 views

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 ...
0
votes
0answers
20 views

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?
0
votes
0answers
18 views

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 ...
0
votes
0answers
9 views

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 ...
0
votes
1answer
14 views

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?
0
votes
0answers
18 views

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 ...
0
votes
0answers
16 views

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 ...
0
votes
1answer
14 views

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,...
0
votes
1answer
8 views

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 ...
0
votes
0answers
6 views

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 ...
-2
votes
0answers
19 views

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
-2
votes
0answers
10 views

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.
0
votes
0answers
16 views

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 ...
-1
votes
0answers
10 views

How to prepare gem dihalides from alkenes [on hold]

How do i prepare gem dihalide from an alkene. .
1
vote
1answer
24 views

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 ...
0
votes
1answer
14 views

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) $$\...
-2
votes
0answers
20 views

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 ...
0
votes
1answer
14 views

Balancing the equation for the preparation of dichromate from chromite ore

$\ce{FeCr_2O4 + Na2CO3 + O2 -> Na2CrO4 + Fe2O3 + CO2}$ I have tried balancing it by writing the reduction and oxidation half equations viz. : $\ce{2Fe^{+II}Cr_2^{+III}O4 -> 4Na2Cr^{+VI}O4 + ...
0
votes
1answer
14 views

Why do bubbles form on the side of a plastic bottle?

I have a plastic bottle filled with drinking water where only one side of the bottle has air bubbles. I know that water is not pure and there are dissolved gases, and my theory is that there are small ...
0
votes
0answers
12 views

What method could be used to make flexible clear pvc rigid? [on hold]

I'm interested in finding a chemical or any other process that would make clear pvc sheeting rigid. The pvc I'm referring to is the flexible type that comes in rolls and is less than a millimeter ...
-1
votes
1answer
28 views

how can a covalent molecule with a permanent dipole still have temporary dipoles?

As I have read online, temporary dipoles occur due to the random fluctuations of the electron cloud. The electrons move randomly to one side of the molecule creating a negative partial charge while ...
-1
votes
0answers
11 views

How to find nucleophilicity? [on hold]

How do i find the nucleophilicity order among alkanes , alkenes , alkynes ?
-1
votes
1answer
19 views

Balancing Redox Reactions (oxidation number method)

I'm confused about balancing redox reactions using the oxidation number method. I know that in order to get my coefficients for the two reactants I need to find the simplest whole number. However, ...
-1
votes
0answers
14 views

Complex geometry [on hold]

We know there are different geometries for different type of conplexes.please explain why Au(+1) always or most of the times forms a linear complex.Also explain the d orbital splitting in a linear and ...
-1
votes
0answers
8 views

What would a comparative energy level diagram for octahedral-to-tetrahedral look like? [on hold]

Tetrahedral complexes are listed of being able to absorb more strongly than octahedral complexes of the same metal in the same oxidation state, so would it be straight to decreasing line?
-1
votes
0answers
10 views

Inertness of a complex

Why are d4 low spin complexes inert? Chromium 2+ system is quite inert in low spin .please explain the fact. Please also mention the way of understanding easily whether a complex is labile or inert
-1
votes
0answers
11 views

Energy change during oxidation of Lithium

I came across this piece of text while reading about the reducing nature of Lithium. The process of oxidation may be thought to proceed as : $\ce{M(s)—>M(g)}$ ...
-2
votes
0answers
6 views

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 ...
-1
votes
0answers
12 views

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 ...
-1
votes
0answers
27 views

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 ...
-1
votes
1answer
6 views

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.
-1
votes
0answers
24 views

A process is reversible if [on hold]

I am counfused between option B and option c.Can anyone please help?
0
votes
0answers
13 views

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 ...
-1
votes
1answer
20 views

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 ...
4
votes
1answer
20 views

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?
-1
votes
0answers
18 views

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 ...
-2
votes
0answers
12 views

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
1
vote
0answers
18 views

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 ...
-2
votes
0answers
25 views

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:
0
votes
0answers
23 views

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 ...
0
votes
1answer
43 views

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?
-2
votes
0answers
13 views

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?
-2
votes
0answers
28 views

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 ...
-1
votes
0answers
14 views

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?
0
votes
0answers
17 views

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 ...
-1
votes
0answers
13 views

confusions regarding reversible reaction [on hold]

I have two questions regarding reversible reactions: 1. Why do reversible reactions need to occur in closed systems? 2. When the system is in equilibrium in reversible reactions, is the amount of ...
0
votes
0answers
23 views

Electrophillic Iodination

I read that the Iodination of C6H6 (in presence of FeCl3) has a higher rate constant than C6D6 (in presence of FeCl3) in a book. It has mentioned without much explanation by simply stating that its ...

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