Chapter 2, Problem 2.21P

Interpretation Introduction

Interpretation:The reason potassium nitrate from India or Italy has the same mass percentage of $\text{K}$ $\text{N}$ and $\text{O}$ should be determined.

Concept introduction:The postulates of Dalton’s atomic theory are as follows:

1. Atoms are small indivisible units that make up every matter.

2. The conversion of an atom of one element into atoms of another element is impossible.

3. The properties and mass of atoms of an element resemble each other and differ from atoms of other elements.

4. The formation of compounds is due to the combination of atoms of different elements in a specific ratio.