Chapter 18, Problem 53E

Interpretation Introduction

Interpretation:

The balanced chemical equations for the oxidation of ${\text{Fe}}^{\text{2+}}$ to ${\text{Fe}}^{\text{3+}}$ by dissolved oxygen and for the formation of $\text{Fe}{\left(\text{OH}\right)}_{\text{3}}\left(s\right)$ by reaction of ${\text{Fe}}^{\text{3+}}\left(aq\right)$ with ${\text{HCO}}_3^{-}\left(aq\right)$ are to be stated.

Concept introduction: Coagulation is the phenomenon by which the small destabilized particles clumped into larger aggregates so that they can easily separate from the water. The process of coagulation involves neutralization of charge. It is a useful process to remove color, turbidity and bacteria from the water. Coagulant is a substance that aggregate dissolved contaminants in water. Ferrous sulfate, aluminium sulfate are used as coagulant.

To determine: The balanced chemical equations for the oxidation of ${\text{Fe}}^{\text{2+}}$ to ${\text{Fe}}^{\text{3+}}$ by dissolved oxygen and for the formation of $\text{Fe}{\left(\text{OH}\right)}_{\text{3}}\left(s\right)$ by reaction of ${\text{Fe}}^{\text{3+}}\left(aq\right)$ with ${\text{HCO}}_3^{-}\left(aq\right)$ .