boiling point of hydrogen fluoride

In hydrogen fluoride, hydrogen atom is bonded to highly electronegative atom, fluorine (electronegativity = 4). It has been found that in solid state hydrogen fluoride consists of long zig-zag chains of H-F molecules associated by Hh..

The boiling points of alkenes gradually increase with an increase in the molecular mass (or chain length). This indicates that inter-molecular attractions become stronger with an increase in the size of the molecule. Branched chain alkenes have lower boiling poin..

Fluorine atom has seven electrons in its valence shell and needs one electron to complete its octet. Hydrogen atom also has a tendency to share one electron to acquire configuration of helium. When the two atoms approach each other, the overlapping of 1s-orbital of hydrogen and..

Aldehydes and Ketones have relatively high boiling point as compared to hydrocarbons of comparable molecular masses. This is because the aldehydes and ketones contain polar carbonyl group and therefore have stronger intermolecular dipole dipole interactions between the opposite..

Vapour pressure measures the tendency for the molecules to escape from liquid to the gas phase. At lower temperatures the vapour pressure of a liquid is much lower than the pressure on the surface of the liquid. When the temperature of the liquid is gradually increased, its vapour pressure also in..

Amines are polar compounds and have higher boiling points than non-polar compounds such as hydrocarbons of some molecular mass. All amines can form hydrogen bonds as protons acceptors by coordination with the lone pair of electrons on the -N atom. But only primary and..

Boiling point of alcohols are much higher than those of alkenes, halo alkenes or ethers of comparable molecular masses. This is because in alcohols intermolecular hydrogen bonding exists due to which a large amount of energy is required to break these bonds. Phenols ..

Boiling point of alcohols are much higher than those of alkenes, halo alkenes or ethers of comparable molecular masses. This is because in alcohols intermolecular hydrogen bonding exists due to which a large amount of energy is required to break these bond..

Due to the presence of -C N group in the molecules, they have high dipole moment and consequently possess high melting and boiling points despite lack of hydrogen bondin..

The melting and boiling point of alkaline Earth metals are characteristically low and do not show regular trends down the group. However these points are higher than the corresponding alkali metals in the same period as atoms of alkaline Earth metals have smaller size..