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Questions tagged [hydrogen-bond]

Intermolecular force between covalently bound hydrogen atom and atom possessing a lone pair of electrons.

9 votes
1 answer
3k views

What are the prerequisites in hydrogen bonding?

I know when a hydrogen bond is, but - can hydrogen bonds only occur between two molecules containing hydrogen? Or, only one of the molecules should contain hydrogen and the other one may not contain ...
NotAChemist's user avatar
4 votes
1 answer
633 views

Bending of water and methanol towards a charged objects

I just had a question about why does water, methanol or any other polar substances tend to bend towards the charged object. I think it is because of a slight dipole dipole movement between the ...
Ethan Hunt's user avatar
21 votes
5 answers
10k views

Strength of hydrogen bonding in phenol or methanol

I wanted to know whether hydrogen bonding is stronger in phenol or methanol. I saw on Wikipedia about the enthalpies of hydrogen bonding in various cases. but could not find the answer to this ...
Sugandha Gupta's user avatar
11 votes
1 answer
690 views

How to simulate surface tension?

I am trying to create a water drop simulation for measuring hydrophobicity of surface. I don't know how to simulate the contact angle which is related by younges equation to the surface tensions for ...
RaaziR's user avatar
  • 113
15 votes
2 answers
53k views

Why is HCl not considered to have hydrogen bonding?

A molecule that has hydrogen bonding usually follows these two premises. 1.) There is a hydrogen atom involved 2.) Hydrogen must be bonded to a highly electronegative element which are nitrogen ($\ce{...
Luis Averhoff's user avatar
6 votes
1 answer
4k views

Why does the gauche conformation of ethane-1,2-diol show hydrogen bonding?

Why does the gauche conformation of ethane-1,2-diol show hydrogen bonding even though there is no 6-membered ring system? If we don't consider one of the $\ce{H}$ (which is what is usually done), then ...
user avatar
5 votes
1 answer
189 views

Theoretical model for the hydrogen bond

I am curious how, from the perspective of quantum chemistry, the hydrogen bond is modeled. In particular I am interested in using such a model to estimate the amount of energy released per $\ce{H2O}$ ...
Hamurabi's user avatar
  • 153
7 votes
1 answer
4k views

Length of C-H bonds in hybridized bonding orbitals

What is the effect of hybridization and double-bond formation on the rest of the atoms/molecules attached to the central atom? For example, in a benzene molecule, the Carbon-Carbon bonds are ...
tkhanna42's user avatar
  • 2,545
10 votes
1 answer
25k views

Why is a ketone not capable of hydrogen bonding among themselves?

The ketone has one oxygen atom in it and there are two lone pairs hanging out, both of which make it seemingly capable of hydrogen bonding. But in reality it is not. Did some research and found this ...
user134789's user avatar
12 votes
2 answers
11k views

Which intermolecular interaction is dependent on the inverse cube of distance?

The intermolecular interaction that is dependent on the inverse cube of distance between molecules is: hydrogen bond ion-ion interaction ion-dipole interaction London force Inverse ...
Swapnil P. Kumar's user avatar
3 votes
1 answer
3k views

Does intramolecular hydrogen bonding occur in dicarboxylic acids?

Consider ethanedioic acid: Could it form intramolecular hydrogen bonds (between the C=O and HO)?
Huey's user avatar
  • 753
7 votes
2 answers
5k views

When does hydrogen bonding happen?

What kinds of molecules will experience hydrogen bonding (inter and intra)? Why does it occur for some H atoms but not others?
Huey's user avatar
  • 753
3 votes
1 answer
5k views

Volatile nature due to hydrogen bonding

Why does intramolecular hydrogen bonding make an organic (or possibly inorganic as well(?)) compound volatile. What I think is that it might be due to decrease in the solubility of the compound as ...
5cube's user avatar
  • 125
3 votes
1 answer
1k views

Hydrogen bond comparison

How do you compare the strength of H bonds when it's the same atom on both sides of the H? Like $\ce{N-H\bond{...}N}$ vs $\ce{F-H\bond{...}F}$? Is one still stronger than the other, or are they both ...
Caesium-133's user avatar
13 votes
2 answers
20k views

Is a hydrogen bond considered to be a van der Waals force?

Is a hydrogen bond considered to be a Van der Waals force?
TCU828's user avatar
  • 141

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