Chapter 18, Problem 93IE

(a)

Interpretation Introduction

The $\text{pH}$ at which precipitation of $\text{Al}{\left(\text{OH}\right)}_{\text{3}}$ will begin if $\text{5}\text{.0 lb}$ of ${\text{Al}}_{\text{2}}{\left({\text{SO}}_{\text{4}}\right)}_{\text{3}}$ is added to $\text{2000 gal}$ of water.

(b)

Interpretation Introduction

To determine:

The mass of $\text{CaO}$ that must be added to the water to achieve the $\text{pH}$ .