The presence of hydrogen bonding between molecules of a substance indicates that the molecules are polar. This means the molecules will be soluble in a polar solvent such as water. Some examples of polar molecules which can hydrogen bond are ammonia (#NH_3#) and methanol (#CH_3OH#). The polarity of these molecules indicates that they will ...

2023年11月21日 · A hydrogen bond is the electromagnetic attraction between polar molecules in which hydrogen is bound to a larger atom, such as oxygen or nitrogen. This is not a sharing of electrons, as in a ...

2020年10月26日 · $\begingroup$ Yes, in each hydrogen bond of H2O, you can trace out three centres : O-H···O, where the O from one water molecule acts as the donor and also the first center, the hydrogen attached with donor oxygen forms the second center, while the oxygen from another water molecule as an acceptor and the third center $\endgroup$ –

2015年5月17日 · 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 ($\ce{N}$), fluorine ($\ce{F}$) and oxygen ($\ce{O}$).

2017年4月16日 · H is 2.2, F is 3.98, so not quite a big enough difference, which is true of all hydrogen halides. These are polar covalent bonds. What I find interesting is that they are all normally named by ionic convention, when they should be termed Hydrogen monoflouride, hydrogen monochloride, etc. by binary covalent naming conventions.

2014年3月20日 · The hydrogen bond in polar molecules occurs only in compounds that have hydrogen bonded to N, O, or F. These very highly electronegative elements create a partial positive charge on the hydrogen. The H atom is attracted to the partial negative charge on an N, O, or F atom in another molecule. The hydrogen bond is an attraction but not a true chemical …

2014年6月5日 · Molecules that can hydrogen bond with water have a higher solubility in water. Molecules which are capable of hydrogen bonds have hydrogen atoms which are covalently bonded to highly electronegative elements (O, N, F). The presence of hydrogen bonding between molecules of a substance indicates that the molecules are polar. This means the molecules …

2016年11月2日 · The hydrogen bond which is within the same molecules is called intramolecular hydrogen bond. It will form when 2 functional group of a molecule can form hydrogen bonds with each other. In order for this to happen, both a hydrogen donor an acceptor must be present within one molecule, and they must be within close proximity of each other in the ...

2023年11月21日 · A hydrogen bond is a type of dipole-dipole force (the strongest of the intermolecular forces) and is an attraction between a slightly positive hydrogen on one molecule, such as{eq}H_2O {/eq}, and ...

2017年7月14日 · Hydrogen bonding is well known to cause large changes in chemical shift values– this is evident if you look up the chemical shift of an alcohol in a data-book (for an aliphatic alcohol this is anywhere between 0.5 and ca. 6.0 ppm depending on solvent/concentration), where a large range of values are given.