Effect of change in external pressure on the boiling point
A liquid may be made to boil at any desired temperature by changing the external pressure. For example, a liquid may be made to boil at higher temperature by increasing the pressure on its surface, as is done in a pressure cooker. It may be made to boil at a lower tem..
2. Melting and boiling points
The melting points and boiling points decrease on moving down the group. However, the decrease in melting points is not as regular as in boiling points..
Melting and boiling points
The melting point and boiling point of boron halides increase with increase in the atomic number of halogen..
The melting point and boiling point of boron halides increase with increase in the atomic number of halogen..Elevation of Boiling Point
The boiling point of a liquid may be defined as the temperature at which the vapor pressure of the liquid becomes equal to the atmospheric pressure. fig 3.9 The vapor pressure curves for the pure solvent and solution consisting of a nonvolatile solute is represented diagrammatic..
The boiling point of a liquid may be defined as the temperature at which the vapor pressure of the liquid becomes equal to the atmospheric pressure. fig 3.9 The vapor pressure curves for the pure solvent and solution consisting of a nonvolatile solute is represented diagrammatic..Intramolecular hydrogen bond
This bond is formed between the hydrogen atom and an atom of the electronegative element (F,O,N) , of the same molecule . Intramolecular hydrogen bond results in the cyclization of the molecules and prevents their association. Consequently, the effect..
This bond is formed between the hydrogen atom and an atom of the electronegative element (F,O,N) , of the same molecule . Intramolecular hydrogen bond results in the cyclization of the molecules and prevents their association. Consequently, the effect..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) Hydrogen atom should be bonded to a highly..
Hydrogen Bonding in Water and Ice
>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 ..
Difference between evaporation and boiling
Although boiling and evaporation are similar processes, yet they differ in few aspects. The main points of difference between evaporation and boiling are given below:..
Although boiling and evaporation are similar processes, yet they differ in few aspects. The main points of difference between evaporation and boiling are given below:..Effect of Temperature and Pressure on States of Matter
Effect of Temperature and Pressure on States of Matter - 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 temperatur..
Effect of Temperature and Pressure on States of Matter - 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 temperatur..Chemical Bonding
Introduction - Let us examine closely the following sets of compounds and study their properties in terms of their physical state, melting points and boiling points..
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