Chapter 7, Problem 9ST

Interpretation Introduction

Interpretation:

The compound that is insoluble in water is to be identified.

Concept Introduction:

Solubility rule for the ionic compound is written below.

Ionic compounds that are soluble in water will have ions shown below.

• Alkali metal ions and the ammonium ion (${\text{Li}}^{+}$, ${\text{Na}}^{+}$, ${\text{K}}^{+}$, ${\text{NH}}_{\text{4}}{}^{+}$)

• Acetate ion $\left({\text{C}}_{\text{2}}{\text{H}}_{\text{3}}{\text{O}}_{\text{2}}{}^{-}\right)$

• Nitrate ion $\left({\text{NO}}_{\text{3}}{}^{-}\right)$

• Halide ion (${\text{Cl}}^{-}$, ${\text{Br}}^{-}$, ${\text{I}}^{-}$)($\text{AgX}$, ${\text{Hg}}_{\text{2}}{\text{X}}_{\text{2}}$ and ${\text{PbX}}_{\text{2}}$ are exceptions and insoluble)

• Sulfate ion ${\text{SO}}_{\text{4}}{}^{-2}$ (${\text{SrSO}}_4$, ${\text{BaSO}}_{\text{4}}$ and ${\text{PbSO}}_{\text{4}}$ are exceptions and insoluble)

Ionic compound that are insoluble in water will have ions shown below.

• Carbonate ion ${\text{CO}}_{\text{3}}{}^{2-}$ (Carbonate of ${\text{Li}}^{+}$, ${\text{Na}}^{+}$, ${\text{K}}^{+}$ and ${\text{NH}}_{\text{4}}{}^{+}$ are exceptions and soluble in water)

• Chromate ion ${\text{CrO}}_{\text{4}}{}^{2-}$ (Chromate of ${\text{Li}}^{+}$, ${\text{Na}}^{+}$, ${\text{K}}^{+}$ and ${\text{NH}}_{\text{4}}{}^{+}$ are exceptions and soluble in water)

• Phosphate ion ${\text{PO}}_4{}^{3-}$ (Phosphate of ${\text{Li}}^{+}$, ${\text{Na}}^{+}$, ${\text{K}}^{+}$ and ${\text{NH}}_{\text{4}}{}^{+}$ are exceptions and soluble in water)

• Sulfide ion ${\text{S}}^{2-}$ ($\text{CaS}$, $\text{SrS}$, $\text{BaS}$ and Sulfide of ${\text{Li}}^{+}$, ${\text{Na}}^{+}$, ${\text{K}}^{+}$ and ${\text{NH}}_{\text{4}}{}^{+}$ are exceptions and soluble in water)

• Hydroxide ion ${\text{OH}}^{-}$ ($\text{Ca}{\left(\text{OH}\right)}_2$, $\text{Sr}{\left(\text{OH}\right)}_2$, $\text{Ba}{\left(\text{OH}\right)}_2$ And Hydroxide of ${\text{Li}}^{+}$, ${\text{Na}}^{+}$, ${\text{K}}^{+}$ and ${\text{NH}}_{\text{4}}{}^{+}$ are exceptions and soluble in water)