hydrogen bonds Definition and 18 Threads

Does solubility depend on the polarity of the molecule or on the number of hydrogen bonds that are formed with water? For example: CF4 can form hydrogen bonds, but it's not polar. Glucose Is Polar e can form hydrogen bonds. How can I predict solubility? Thanks

Hello, I learned recently about alveolar surface tension, and the explanation provided in the course was not satisfactory, it said that it is due to the force that pushes water molecules of the outer layer to the inner layers, I don't understand why this force that pushes water toward the cell...

Hello, when reviewing the types of chemical bonds i was a little bit confused about van der waals interactions, in the definition we talk about momentarily disproportion of electrons that provoke a dipole , and then i read that also include hydrogen bonds . I am a bit confused about van der...

I need to calculate H-bonds in a specific direction of a C-alpha atom of a protein. And, I need to calculate that from a PDB file. Can anyone give me a general guideline/direction/idea regarding how to do that? N.B. I need to write a python program.

Cheers everyone. Can the amount of water molecules added to a solution impact the formation of a salt with its ions mainly bonded through hydrogen bonds with electrostatic like behaviour? Let me give Some background to the question first: I am studying the precipitation of Phosphorous(P) as...

I know that the two are different thing, that vdW appears in inert gas crystals and alike while hydrogen bond bonds molecules of water. My question is, how does the potential look for hydrogen bond? For vdWaals we have the two terms proportional to 1/R^6 that describes attraction and 1/R^12...

I'm doing a computational lab about binding energy and comparing different methods of solvation. What does positive and negative binding energy signify? Half of the places I look say the more positive the binding energy the stronger the interaction between the molecules. Other places say the...

can H2s form hydrogen bonds i read that H2s can , but I'm not so sure about it .

like in NH3, maximum number of Hydrogen bonds is 4 and general is 2 ... is it that in any molecule, max number of hydrogen bonds=Hydrogens with +∂ change + lone pairs with -∂ charge (enough polarization by F or O or N and chelated with Cl) now, if that was correct, hydrazine nh2-nh2 forms 6...

Double stranded DNA are bind with hydrogen bonds in between the nitrogenous bases, Usually we use high temperature for denature,so can we break the hydrogen bonds with phonon because shorter wavelength give rise to heat, weather it is possible to denature the DNA?

Hi I've read sufficient literature on Ice/Water expansion to understand that when water freezes into a lattice, the hydrogen bonds between molecules are longer than they are in liquid water, hence ice expands. However, everything I've read seems to skip over the reason why with statements like...

This is not a homework question.

Hey, I'm wondering how you figure out the number of hydrogen bonds acting between molecules. I know each water molecule supposedly makes 4 hydrogen bonds with other water molecules through my reading, but I want to know how many for isopropyl alcohol, which has only one OH group. I know its less...

I'm a little confused on hydrogen bonds. Here's a sample question and answer I'm having trouble with:1) In a single molecule of water, two hydrogen atoms are bonded to a single oxygen atom by A) hydrogen bonds. B) nonpolar covalent bonds. C) polar covalent bonds. D) ionic bonds. E) van der Waals...

A hydrogen bond is the attractive force between one electronegative atom and a hydrogen covalently bonded to another electronegative atom. Doesn't this apply to hydrochloric acid?

How many total hydrogen bonds would exist between the following strands of DNA and their complementary strands? 1. GCATGC 2. TATGGC

Ok. It's been a long time since chemistry class. Firstly, I'm investigating alternative techniques for cutting paper. Think, a normal sheet of computer printer paper. Disregard for the moment any chemical binders. Paper is close to 100% cellulose. So, cellulose is a polysaccharide which...

i'm writing a lab report of an experiment investigating strenth of hydrogen bond. An excess of cyclohexane was mixed with ethanol and there's a decrease in temperature of the mixture. I was told that upon the addition of cyclohexane, the H bonds between ethanol molecules were broken and I don't...