Chapter 3.3, Problem 3.4PSP

(a)

Interpretation Introduction

Interpretation:

The given $\text{NaF}$ compound  is water soluble or not has to be identified.

Concept introduction:

Soluble compounds in water

Almost all the salts of ${\text{Na}}^{\text{+}}{\text{, K}}^{\text{+}}{\text{, NH}}_{\text{4}}{}^{\text{+}}\text{,}$ salts of nitrate $\left({\text{NO}}_{\text{3}}{}^{\text{-}}\right)$, chlorate $\left({\text{ClO}}_{\text{3}}{}^{\text{-}}\right)$, perchlorate $\left({\text{ClO}}_{\text{4}}{}^{\text{-}}\right)$, acetate $\left({\text{CH}}_{\text{3}}{\text{CO}}_{\text{2}}{}^{\text{-}}\right)$ are soluble.

Almost all the salts of ${\text{Cl}}^{\text{-}}{\text{, Br}}^{\text{-}}{\text{, I}}^{\text{-}}\left(\text{halides}\right)$ are soluble. But some of the halides are $\left({\text{Ag}}^{\text{+}}{\text{, Hg}}_{\text{2}}{}^{\text{2+}}{\text{, Pb}}^{\text{2+}}\right)$ are insoluble.

Salts of F^- are soluble. But some of the fluoride salt of ${\text{Mg}}^{\text{2+}}{\text{, Ca}}^{\text{2+}}{\text{, Sr}}^{\text{2+}}{\text{, Ba}}^{\text{2+}}{\text{, Pb}}^{\text{2+}}$ are insoluble.

Salts of sulfate $\left({\text{SO}}_{\text{4}}{}^{\text{2-}}\right)$ are soluble. But sulfates of ${\text{Ca}}^{\text{2+}}{\text{, Sr}}^{\text{2+}}{\text{, Ba}}^{\text{2+}}{\text{, Pb}}^{\text{2+}}{\text{, Ag}}^{\text{+}}\text{,}$ are insoluble.

Insoluble compounds in water:

Most of the salts of carbonate $\left({\text{CO}}_{\text{3}}{}^{\text{2-}}\right)$, phosphate $\left({\text{PO}}_{\text{4}}{}^{\text{3-}}\right)$, oxalate $\left({\text{C}}_{\text{2}}{\text{O}}_{\text{4}}{}^{\text{2-}}\right)$, chromate $\left({\text{CrO}}_{\text{4}}{}^{\text{2-}}\right)$, sulfide $\left({\text{S}}^{\text{2-}}\right)$ are insoluble but some of the salts of NH₄⁺, alkali metal cations and BaS are soluble.

Most of the metal hydroxides and oxides are insoluble in water bit some of the alkali metal hydroxides, $\text{Ba}{\left(\text{OH}\right)}_{\text{2}}\text{and Sr}{\left(\text{OH}\right)}_{\text{2}}$ are soluble in water.

(b)

Interpretation Introduction

Interpretation:

The given ${\text{Ca(CH}}_{\text{3}}{\text{COO)}}_{\text{2}}$ compound is water soluble or not has to be identified.

Concept introduction:

Refer to part (a)

(c)

Interpretation Introduction

Interpretation:

The given ${\text{SrCl}}_{\text{2}}$ compound is water soluble or not has to be identified.

Concept introduction:

Refer to part (a)

(d)

Interpretation Introduction

Interpretation:

The given $\text{MgO}$ compound is water soluble or not has to be identified.

Concept introduction:

Refer to part (a)

(e)

Interpretation Introduction

Interpretation:

The given ${\text{PbCl}}_{\text{2}}$ compound is water soluble or not has to be identified.

Concept introduction:

Refer to part (a)

(f)

Interpretation Introduction

Interpretation:

The given $\text{HgS}$ compound is water soluble or not has to be identified.

Concept introduction:

Refer to part (a)