Chapter 8, Problem 20Q

Interpretation Introduction

Interpretation: For a given data, difference in the molar volume of water as liquid and gas should be explained.

Concept introduction:

• Molar volume ${\text{V}}_{\text{m}}$, is the volume occupied by one mole of a substance at a given temperature and pressure. It is equal to the molar mass ( $\text{M}$) divided by mass density ( $\text{ρ}$).

  ${\text{V}}_{\text{m}}\text{=}\frac{\text{M}}{\text{ρ}}$

• Molecules in liquid phase and solid phase are very close together. Molecules in the gaseous phase are very far apart.
• Molar volume of 1 mole of gaseous substance is greater than the molar volume of 1 mole of liquid substance.