Chapter 7, Problem 7.15E

Interpretation Introduction

Interpretation:

The reason as to why ground-up limestone $\left({\text{CaCO}}_{\text{3}}\right)$ is a better choice than ground-up soda ash $\left({\text{Na}}_{\text{2}}{\text{CO}}_{\text{3}}\right)$ as a gentle abrasive in some powder cleansers is to be stated.

Concept introduction:

Solubility is the maximum amount of a solute that can be dissolved in the given mass of solvent at a given temperature. The term soluble is used for a pair of substances that forms a homogenous mixture. The term insoluble is used for a pair that does not mix with each other.