the questions of effects hydrogen bond of boiling point

When salt is added to boiling water the temperature of boiling water is raised above 100 o C. This is because the salt absorbs heat energy from the water for dissolving in it and its average kinetic energy decreases. When gases dissolve in water it lowers the boiling ..

Metals have metallic bond strengths, which is intermediate to that of covalent and ionic bonds. Therefore in general, metals have boiling and melting points in between to that of covalent and ionic compound..

Since hydrogen bond comes into existence as a result of dipole-dipole interactions between the molecules, therefore, following conditions are required for effective hydrogen bonding..

The melting and boiling points of alkynes increase with molecular mass. Melting boiling points of some alkynes are, Ethyne/acetylene (CH CH), - 83 o C or 190 K Propyne (CH 3 -C CH), - 27 o C or 246 K 1 - Butane (CH 3 -CH 2 -C CH), 8 o C or 281..

Conditions for Hydrogen Bonding - Since hydrogen bond comes into existence as a result of dipole-dipole interactions between the molecules, therefore, following conditions are required for effective hydrogen bonding. (i) Hyd..

>As a result of tetrahedral arrangement of H 2 O molecules in the solid state, the ice structure extends in three dimensions. Further the molecules of H 2 O are not packed closely as hydrogen bonds between oxygen and H atoms are ..

D T b = k b m (1) If W B gms of the solute is dissolved in W A gms of the solvent then (where M B is the molar mass of the solute) From (1) and (2)..

When we heat a solid, we add energy to the system increasing the vibration of the particles. Eventually these particles break free from their binding forces and melt. The normal melting point of a crystal is the temperature at which it melts under one atmospheric pressure. Increase in pre..

The experiment illustrated in figure shows the effect of pressure on the melting point of ice. A thin copper wire passes round a large block of ice and two weights are attached to the free ends of the wire. The pressure of the wire lowers the melting point of ice in c..