Chapter F, Problem I.21E

(a)

Interpretation Introduction

Interpretation:

Net ionic equation has to be written for the formation of ${\text{Ag}}_{\text{2}}{\text{SO}}_{\text{4}}$.

Concept Introduction:

Complete ionic equation is the one that shows all the species that is present in the chemical reaction.  The dissolved ionic compounds are alone showed as ions.  Precipitates are not showed as ions.

Net ionic equation is the one that is obtained from the complete ionic equation by cancelling out the spectator ions.

(b)

Interpretation Introduction

Interpretation:

Net ionic equation has to be written for the formation of $\text{HgS}$.

Concept Introduction:

Refer part (a).

(c)

Interpretation Introduction

Interpretation:

Net ionic equation has to be written for the formation of ${\text{Ca}}_{\text{3}}{{\text{(PO}}_{\text{4}}\text{)}}_{\text{2}}$.

Concept Introduction:

Refer part (a).

(d)

Interpretation Introduction

Interpretation:

Two soluble salts has to be identified that can produce ${\text{Ag}}_{\text{2}}{\text{SO}}_{\text{4}}$, $\text{HgS}$, ${\text{Ca}}_{\text{3}}{{\text{(PO}}_{\text{4}}\text{)}}_{\text{2}}$ and also the spectator ions has to be given.