AP24 Q2 Class 10 (Valence Bond Theory 2, IM Forces 1)

Front

What type of intermolecular force is primarily responsible for the higher boiling point of CO compared to N2?

Back

Dipole-dipole forces.

Front

What type of intermolecular force is primarily responsible for the lower boiling point of BrCl compared to Br2?

Back

London dispersion forces.

Front

What is the bond angle in the H2Se molecule, and which orbitals on Se are used to form bonds with H?

Back

The bond angle is close to 90 degrees, and the orbitals used are p orbitals.

Front

How do you determine the number of covalent and hydrogen bonds in a given molecular structure?

Back

Count the number of shared electron pairs for covalent bonds and the number of hydrogen bonds formed between molecules.

Front

What is the primary intermolecular attractive force between benzene and water molecules?

Back

Dipole-induced dipole.

Front

Define dipole-dipole forces and provide an example of a molecule that exhibits this type of interaction.

Back

Dipole-dipole forces are attractive forces between polar molecules. An example is hydrogen chloride (HCl).

Front

What are London dispersion forces and how do they arise?

Back

London dispersion forces are weak intermolecular forces arising from temporary dipoles in molecules, which occur due to fluctuations in electron distribution.

Front

Explain the significance of bond angles in molecular geometry.

Back

Bond angles are important as they determine the shape of the molecule, which affects its reactivity and physical properties.

Front

What is the relationship between boiling point and intermolecular forces?

Back

Generally, stronger intermolecular forces result in higher boiling points due to the increased energy required to separate the molecules.

Front

How does the solubility of a substance relate to intermolecular forces?

Back

The solubility of a substance depends on the similarity of intermolecular forces between the solute and solvent; 'like dissolves like'.