Chapter 11, Problem 11.36QP

(a)

Interpretation Introduction

Interpretation:

For given statement,

The molecular substances are mostly similar, which flask probably has substance A          has to be identified.

Concept introduction:

Intermolecular forces are termed as the forces acting “between molecules” that is components of a substance.  Intramolecular forces are the forces that operate “within a molecule”.  The prefix “inter” mean “among” and “intra” mean “within”.

Intermolecular forces are Van der Waals forces.  They are weak and have two types viz., London dispersion forces, dipole-dipole forces and hydrogen bonding.  Hydrogen bonding is relatively the strongest one.

Arrangement of major types of intermolecular forces in increasing order of strength:

$\text{London}\text{dispersion}\text{forces}\text{<}\text{Dipole-dipole}\text{forces}\text{<}\text{Hydrogen}\text{bonding}$

(b)

Interpretation Introduction

Interpretation:

For given statement,

The pictures change when increase the temperature by $\text{15°C}$ has to be identified.

Concept introduction:

Intermolecular forces are termed as the forces acting “between molecules” that is components of a substance.  Intramolecular forces are the forces that operate “within a molecule”.  The prefix “inter” mean “among” and “intra” mean “within”.

Intermolecular forces are Van der Waals forces.  They are weak and have two types viz., London dispersion forces, dipole-dipole forces and hydrogen bonding.  Hydrogen bonding is relatively the strongest one.

Arrangement of major types of intermolecular forces in increasing order of strength:

$\text{London}\text{dispersion}\text{forces}\text{<}\text{Dipole-dipole}\text{forces}\text{<}\text{Hydrogen}\text{bonding}$