Chapter 4, Problem 4.119QP

(a)

Interpretation Introduction

Interpretation: The given equation is to be balanced. The concentration of the ${\text{Fe}}^{2+}$ solution is to be calculated.

Concept introduction: The chemical equation is said to be balanced when the number of atoms of chemical species on the reactant side is equal to the number of chemical species on the product side.

Concentration of the solution with respect to molarity $\left(\text{M}\right)$  is the number of moles of given solute in a liter of solution. Molarity defines the molar concentration of the compound.

It is calculated by the formula,

$M=\frac{n}{V}$

To determine: The balanced ionic equation from the given unbalanced ionic equation.

(b)

Interpretation Introduction

To determine: The concentration of the ${\text{Fe}}^{2+}$ solution.