To choose the molecule having the higher boiling point and to give a brief account for the intermolecular forces that influenced the boiling point of the corresponding molecule. Concept Introduction: The set of repulsive and attractive force between molecules that result from the polarity between neighboring molecules is represented as intermolecular force. There are four types of intermolecular forces: Hydrogen bonding London dispersion force Ion – dipole force Dipole – Dipole force Ion – dipole force is a strong intermolecular force as it contains both ionic and polar bonds. Hydrogen bond: Hydrogen is bonded to strong electronegative atom like oxygen, nitrogen etc. Dipole – Dipole: This force takes place between two polar compounds. London dispersion force: This force is present in all compounds and is a weak force. As the molecular mass increases the energy required to get over the intermolecular forces increases
To choose the molecule having the higher boiling point and to give a brief account for the intermolecular forces that influenced the boiling point of the corresponding molecule. Concept Introduction: The set of repulsive and attractive force between molecules that result from the polarity between neighboring molecules is represented as intermolecular force. There are four types of intermolecular forces: Hydrogen bonding London dispersion force Ion – dipole force Dipole – Dipole force Ion – dipole force is a strong intermolecular force as it contains both ionic and polar bonds. Hydrogen bond: Hydrogen is bonded to strong electronegative atom like oxygen, nitrogen etc. Dipole – Dipole: This force takes place between two polar compounds. London dispersion force: This force is present in all compounds and is a weak force. As the molecular mass increases the energy required to get over the intermolecular forces increases
Solution Summary: The author explains the four types of intermolecular forces: Hydrogen bonding London dispersion force Ion – Dipole force
Interpretation: To choose the molecule having the higher boiling point and to give a brief account for the intermolecular forces that influenced the boiling point of the corresponding molecule.
Concept Introduction:
The set of repulsive and attractive force between molecules that result from the polarity between neighboring molecules is represented as intermolecular force. There are four types of intermolecular forces:
Hydrogen bonding
London dispersion force
Ion – dipole force
Dipole – Dipole force
Ion – dipole force is a strong intermolecular force as it contains both ionic and polar bonds.
Hydrogen bond: Hydrogen is bonded to strong electronegative atom like oxygen, nitrogen etc.
Dipole – Dipole: This force takes place between two polar compounds.
London dispersion force: This force is present in all compounds and is a weak force.
As the molecular mass increases the energy required to get over the intermolecular forces increases
Put the following molecules in order of increasing polarizability: GaCl3, BH3, AlCl3, AlH3, and GaBr3.
QUESTION 2
(i) Hydrogen peroxide (H2O2) has a higher boiling point and a lower vapor pressure than water. Justify the differences of the physical properties of hydrogen peroxide and water.
(ii) Distinguish between sigma (σ) and pi (π) interactions using the symmetry criteria of rotation, reflection and inversion. Give one example of each type of interaction.
Which of these substances exhibits H bonding? Draw examples of the H bonds between two molecules of each substance that does.