Chapter U4.77, Problem 2E

Interpretation Introduction

Interpretation:

The approximate size of mol of a gas, 1 mol of a solid, and 1 mol of a liquid should be predicted.

Concept Introduction:

The amount of the substance that contains the same number of particles or atoms or molecules is termed as mole.

Explanation of Solution

Anything that occupies space is termed as matter. Matter is classified as solid, liquid, and gas depending on the type of intermolecular forces present in between them. In solids, and liquids the atoms are closely packed with each other thus, solids are having largest or strongest intermolecular forces of attraction in between them, followed by the liquids, and then gas.

Due to this reason, a mole of a molecule is equal to 6 times a sextillion molecule which constitute very less space in case of liquids and solids.

For example, sodium chloride which is used as a table salt in daily life has a molar mass of 58.45 g that means 1 mole of NaCl is approximately equal to 1/4^th cup which is full of salt.

The situation for gases is quite different. As one mole of an ideal gas constitutes 22.4 L volume at standard temperature and pressure. That means gases occupies large volume as compared to the solids and liquids due to weak intermolecular forces of attraction in between them they can spread widely.

For example, 1 mol of carbon dioxide gas occupies 22.4 L volume which is equal to volume of the bucket used for the bathing.