Hydrogen bond Definition and 18 Threads

if the human skin consists of hydrogen, then why does not happen hydrogen bond through contact with something or with another person?

Can somebody explain the Hydrogen bond Auto-correlation function in Computational Chemistry (Molecular Dynamics and Simulations) and what does Intermittent and Continuous Hydrogen bond means? Why the graph decays over time? and it's applications?

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...

Hello. I'm new to this forum and to Physics and Chemistry in general and I have a question that's making me go crazy: why does the potential energy decrease as two atoms (say, hydrogen atoms) get closer to form a molecule? I'm talking about this graphic: I've read that it's related to the...

Hello, in ice I have read that the average bond length of the hydrogen bond is about 2 Angstroms. This is roughly twice the O-H (covalent) bond length. My question is what really determines the length of the hydrogen bond? Why wouldn't the hydrogen be drawn closer to the next water...

I've read a few papers regarding the effects of a uniform magnetic field on water solutions, but I'm a complete illiterate when it comes to deciphering the jargon. So far, many papers confirm that a uniform magnetic field strengthens hydrogen bonds and can increase the redox potential. I've...

My notes states that fluorine is too highly electronegative and hence clings on too tightly to its lone pair of electrons and so it cannot accept hydrogen bonds as well. However, it also stated that a hydrogen bond will be stronger if the electron density on the electron rich atom the stronger...

More acidity means more electronegativity, and more electronegativity means more dipole moments. I observed that liquids with low dipole moments (bases) often have lower density and surface tension, but not necessarily hydrogen bonds. To contradict it, acetic acid have a low surface tension but...

How do you strengthen and weaken hydrogen bonds in water aside from changing its temperature? Could you add any solutes to do so?

Homework Statement why acyl chloride can't form hydrogen bond? there's C=O , which O atom can form hydrogen bond . am i right?Homework Equations The Attempt at a Solution

I googled it and got both answers, "yes" and "no." What I mean is: O-H-S, F-H-S, N-H-S, etc. Ex.'s of "yes": http://www.ncbi.nlm.nih.gov/pubmed/19089987 [PLAIN]http://pubs.rsc.org/en/content/artic.../ce/c0ce00760a[/URL] Ex. of "no": http://www.nature.com/nature/journal.../149218a0.html

Homework Statement My textbook wrote that haloalkanes are generally insoluble in water.It is because the polar C-X bonds are not polar enough to make the haloalkanes soluble in water. Consider tetrafluoromethane Difference in electronegativity between F and C = 4.0 - 2.5 = 1.5 Difference in...

I saw a video on youtube saying water molecules were held together by hydrogen bonding, not dipole dipole. Why is that?

I have two big problems in my mind about hydrogen bond for many years. I have checked many textbooks but all of them fails to explain what I don't understand. 1. To form a hydrogen bond (particular strong attraction) Why it is necessary for a hydrogen atom to attach to a highly...

Cl gets similar electronegativity as N, NH3 is a hydrogen bond, but HCl isn't, why? N and Cl also gets lone pair electrons! N and Cl is more or less the same. Could anybody please answer this question? Okay, if I rephrase it, it will become why the bonding between H and Cl isn't hydrogen...

can sodium sulphate, p-toluidine, and benzoic acid form hydrogen bond with water?

1) The nitrogenous bases of DNA hydrogen bond with each other yet they are also characterized as hydrophobic? How can something hydrophobic hydrogen bond? 2) How many chromosomes are present in a human somatic cell after S phase (DNA replication). Is it still 46 or 92?

I read that water expands when it freezes due to it's hydrogen bond. What on Earth (or ocean, for that matter) does a hydrogen bond have to do with becoming less dense with freezing :confused: ? Please explain taking into consideration that I haven't taken chem. since 10th grade. Thanks!