Both H2O and HF possess H bonds as their intermolecular force but H bonds of HF are stronger than that of H2o. therefore boiling point of than that of H2O.
But experimental boiling point is high in H2O than that of Hf
in water molecule there are two partially positive hydrogen atoms so chances of hydrogen bonding as compare to HF are higher these hydrogen bonding in three dimensions create high attraction among water molecules therefore high amount of energy is required to convert the water into vapour and water shows high boiling point.
HF is a linear molecule where as H2O has a bent shape, the more complex the shape the higher the boiling point generally
H2O has stronger intermolecular forces than N2
Because hydrogen bonds exist between H and O, but not between H and F.
Water molecules form 2 hydrogen bonds among them. HF has only one hydrogen bond. More energy is needed to break two h bonds. So the boiling point of water is higher.
Boiling point of HCl: -85,1 0C. Boiling point of HF: 19,5 0C.
HI has a higher boiling point because of the dipole-dipole Intermolecular forces as well as the dispersion forces, which become more evident with molecular weight, which will dominate over the dipole-dipole forces, so HCl has a lower boiloing point.
N2 would have the lowest BP because it has the weakest intermolecular forces.
becaus H-F forming hydrogen bond will the H-Cl dos'n
Cl2 has the lowest boiling point of these four substances.
Boiling point of HCl: -85,1 0C. Boiling point of HF: 19,5 0C.
HI has a higher boiling point because of the dipole-dipole Intermolecular forces as well as the dispersion forces, which become more evident with molecular weight, which will dominate over the dipole-dipole forces, so HCl has a lower boiloing point.
HF is electronegative compared to O2. HF has delta plus and delta minus creating a dipole moment, it is a polar molecule therefore it has a higher boiling point. O2 which is symmetrical and non polar (looks like O=O) and therefore has no dipole moment.
N2 would have the lowest BP because it has the weakest intermolecular forces.
becaus H-F forming hydrogen bond will the H-Cl dos'n
Cl2 has the lowest boiling point of these four substances.
Hydrogen fluoride has higher boiling point than hydrogen bromide ( HF 19.5 C HBr -66 C) because in hydrogen fluoride has two kinds of forces, one is hydrogen bonding and other is London dispersion forces. In Hydrogen bromide there are only london dispersion forces. These are weaker than hydrogen bonds therefore HF has the higher boiling pint.
The small size and high electronegativity of Fluorine is responsible for high polarity in HF molecules this high polarity is responsible for strong hydrogen bonding with in HF molecules so high amount of heat is required to convert the liquid HF into gaseous state and hence it has high boiling point as compare to HCl.Polar.
NaCl has ther highest melting point, as it is a solid at room temeprature. The other are gases and there fore have much lower boiling points and lower again for melting points.
O2, SO2, HF.. im positive, just did a webassign if you know what that is but its right...
XeF4+H2O->XeO3+HF+H2O
hf + koh -> h2o + kf