Chapter 4, Problem 37A

Interpretation Introduction

Interpretation:The name and formula of compounds formed by given cation and anion needs to be determined.

Concept Introduction: An ionic compound is composed of cation and anion. Here cation is positively charged and anion carries negative charge.

The cation and anion can be composed of more than one atoms. Such types of ions are called polyatomic ions.

Explanation of Solution

Given information:

  

The chemical formula of any compound can be written with criss-cross method in which the valency of both cation and anion are cross multiply to get the simplest whole number of elements in the formula. Thus, the name and formula of compound are listed below;

	${\text{Fe}}^{\text{2+}}$	${\text{Al}}^{\text{3+}}$	${\text{Na}}^{\text{+}}$	${\text{Ca}}^{\text{2+}}$	${\text{Hg}}^{\text{2+}}$
${\text{CO}}_{\text{3}}{}^{\text{2-}}$	${\text{FeCO}}_{\text{3}}$ Ferrous carbonate	${\text{Al}}_{\text{2}}{{\text{(CO}}_{\text{3}}\text{)}}_{\text{3}}$ Aluminum carbonate	${\text{Na}}_{\text{2}}{\text{CO}}_{\text{3}}$ Sodium carbonate	${\text{CaCO}}_{\text{3}}$ Calcium carbonate	${\text{HgCO}}_{\text{3}}$ Mercury (I) carbonate
${\text{BrO}}_{\text{3}}{}^{\text{-}}$	${\text{Fe(BrO}}_{\text{3}}{\text{)}}_{\text{2}}$ iron(II) bromate	${\text{Al(BrO}}_{\text{3}}{\text{)}}_{\text{3}}$ Aluminum (III) bromate	${\text{NaBrO}}_{\text{3}}$ Sodium bromate	${\text{Ca(BrO}}_{\text{3}}{\text{)}}_{\text{2}}$ Calcium bromate	${\text{Hg(BrO}}_{\text{3}}{\text{)}}_{\text{2}}$ Mercury (II) bromate
${\text{C}}_{\text{2}}{\text{H}}_{\text{3}}{\text{O}}_2{}^{\text{-}}$	${\text{Fe(C}}_{\text{2}}{\text{H}}_{\text{3}}{\text{O}}_2{\text{)}}_2$ Iron (II) acetate	${\text{Al(C}}_{\text{2}}{\text{H}}_{\text{3}}{\text{O}}_2{\text{)}}_{\text{3}}$ Aluminum acetate	${\text{NaC}}_{\text{2}}{\text{H}}_{\text{3}}{\text{O}}_2$ Sodium acetate	${\text{Ca(C}}_{\text{2}}{\text{H}}_{\text{3}}{\text{O}}_2{\text{)}}_2$ Calcium acetate	${\text{Hg(C}}_{\text{2}}{\text{H}}_{\text{3}}{\text{O}}_2{\text{)}}_2$ mercury (II) acetate
${\text{OH}}^{\text{-}}$	${\text{Fe(OH)}}_{\text{3}}$ iron (III) hydroxide	${\text{Al(OH)}}_{\text{3}}$ Aluminum hydroxide	$\text{NaOH }$ Sodium hydroxide	${\text{Ca(OH)}}_{\text{2}}$ Calcium hydroxide	${\text{Hg(OH)}}_2$ Mercury (II) hydroxide
${\text{HCO}}_{\text{3}}{}^{\text{-}}$	${\text{Fe(HCO}}_{\text{3}}{\text{)}}_{\text{2}}$ Iron (II) hydrogen carbonate	${\text{Al(HCO}}_{\text{3}}{\text{)}}_3$ Aluminum hydrogen carbonate	${\text{NaHCO}}_{\text{3}}$ sodium hydrogen carbonate	${\text{Ca(HCO}}_{\text{3}}{\text{)}}_{\text{2}}$ calcium hydrogen carbonate	${\text{Hg(HCO}}_{\text{3}}{\text{)}}_{\text{2}}$ Mercury (II) hydrogen carbonate
${\text{PO}}_4{}^{\text{3-}}$	${\text{Fe}}_{\text{3}}{{\text{(PO}}_4\text{)}}_{\text{2}}$ Iron(II) phosphate	${\text{AlPO}}_4$ aluminum phosphate	${\text{Na}}_{\text{3}}{\text{PO}}_4$ sodium phosphate	${\text{Ca}}_{\text{3}}{{\text{(PO}}_4\text{)}}_{\text{2}}$ calcium phosphate	${\text{Hg(PO}}_4{\text{)}}_{\text{2}}$ mercury (II) phosphate
${\text{SO}}_{\text{3}}{}^{\text{2-}}$	${\text{FeSO}}_{\text{3}}$ iron(II) sulfite	${\text{Al}}_{\text{2}}{{\text{(SO}}_{\text{3}}\text{)}}_{\text{3}}$ aluminum sulfite	${\text{Na}}_{\text{2}}{\text{SO}}_{\text{3}}$ sodium sulfite	${\text{CaSO}}_{\text{3}}$ calcium sulfite	${\text{HgSO}}_{\text{3}}$ mercury (II) sulfite
${\text{ClO}}_4{}^{\text{-}}$	${\text{Fe(ClO}}_4{\text{)}}_{\text{2}}$ iron(II) perchlorate	${\text{Al(ClO}}_4{\text{)}}_{\text{3}}$ aluminum perchlorate	${\text{NaClO}}_4$ sodium perchlorate	${\text{Ca(ClO}}_4{\text{)}}_{\text{2}}$ calcium perchlorate	${\text{Hg(ClO}}_4{\text{)}}_{\text{2}}$ Mercury (II) perchlorate
${\text{SO}}_{\text{4}}{}^{\text{2-}}$	${\text{FeSO}}_{\text{4}}$ iron(II) sulfate	${\text{Al}}_{\text{2}}{{\text{(SO}}_{\text{4}}\text{)}}_{\text{3}}$ aluminum sulfate	${\text{Na}}_{\text{2}}{\text{SO}}_{\text{4}}$ sodium sulfate	${\text{CaSO}}_{\text{4}}$ calcium sulfate	${\text{HgSO}}_{\text{4}}$ mercury (II) sulfate
${\text{O}}^{\text{2-}}$	$\text{FeO}$ iron (II) oxide	${\text{Al}}_{\text{2}}{\text{O}}_{\text{3}}$ aluminum oxide	${\text{Na}}_{\text{2}}\text{O}$ sodium oxide	$\text{CaO}$ calcium oxide	$\text{HgO}$ mercury (II) oxide
${\text{Cl}}^{\text{-}}$	${\text{FeCl}}_{\text{2}}$ iron (II) chloride	${\text{AlCl}}_{\text{3}}$ aluminum chloride	$\text{NaCl}$ sodium chloride	${\text{CaCl}}_{\text{2}}$ calcium chloride	${\text{HgCl}}_{\text{2}}$ mercury (II) chloride

	${\text{NH}}_{\text{4}}{}^{\text{+}}$	${\text{Fe}}^{\text{3+}}$	${\text{Ni}}^{\text{2+}}$	${\text{Hg}}_{\text{2}}{}^{\text{2+}}$
${\text{CO}}_{\text{3}}{}^{\text{2-}}$	${{\text{(NH}}_{\text{4}}\text{)}}_{\text{2}}{\text{CO}}_{\text{3}}$ Ammonium carbonate	${\text{Fe}}_{\text{2}}{{\text{(CO}}_{\text{3}}\text{)}}_{\text{3}}$ Ferric carbonate	${\text{NiCO}}_{\text{3}}$ Nickel carbonate	$\text{Hg}\text{C}{\text{O}}_{\text{3}}$ Mercury (I) carbonate
${\text{BrO}}_{\text{3}}{}^{\text{-}}$	${\text{NH}}_{\text{4}}{\text{BrO}}_{\text{3}}$ Ammonium bromate	${\text{Fe(BrO}}_{\text{3}}{\text{)}}_{\text{3}}$ Iron (III) bromate	${\text{Ni(BrO}}_{\text{3}}{\text{)}}_{\text{2}}$ Nickel (II) bromate	${\text{Hg}}_{\text{2}}{{\text{(BrO}}_{\text{3}}\text{)}}_{\text{2}}$ Mercury (I) bromate
${\text{C}}_{\text{2}}{\text{H}}_{\text{3}}{\text{O}}_2{}^{\text{-}}$	${\text{NH}}_{\text{4}}{\text{C}}_{\text{2}}{\text{H}}_{\text{3}}{\text{O}}_2$ Ammonium acetate	${\text{Fe(C}}_{\text{2}}{\text{H}}_{\text{3}}{\text{O}}_2{\text{)}}_{\text{3}}$ Iron (III) acetate	${\text{Ni(C}}_{\text{2}}{\text{H}}_{\text{3}}{\text{O}}_2{\text{)}}_2$ Nickel (II) acetate	${\text{Hg}}_2{({\text{C}}_{\text{2}}{\text{H}}_{\text{3}}{\text{O}}_2\text{)}}_2$ mercury (I) acetate
${\text{OH}}^{\text{-}}$	${\text{NH}}_{\text{4}}\text{OH }$ Ammonium hydroxide	${\text{Fe(OH)}}_{\text{3}}$ Iron (III) hydroxide	${\text{Ni(OH)}}_{\text{2}}$ Nickel (II) hydroxide	${\text{Hg}}_{\text{2}}{\text{(OH)}}_{\text{2}}$ mercury (I) hydroxide
${\text{HCO}}_{\text{3}}{}^{\text{-}}$	${\text{NH}}_{\text{4}}{\text{HCO}}_{\text{3}}$ ammonium hydrogen carbonate	${\text{Fe(HCO}}_{\text{3}}{\text{)}}_{\text{3}}$ iron(III) hydrogen carbonate	${\text{Ni(HCO}}_{\text{3}}{\text{)}}_{\text{2}}$ nickel (II) hydrogen carbonate	$\text{Hg}{\text{(HCO}}_{\text{3}}\text{)}{}_{\text{2}}$ mercury (I) hydrogen carbonate
${\text{PO}}_4{}^{\text{3-}}$	${{\text{(NH}}_{\text{4}}\text{)}}_{\text{3}}{\text{PO}}_4$ ammonium phosphate	${\text{FePO}}_{\text{4}}$ iron(II) phosphate	${\text{Ni}}_{\text{3}}{{\text{(PO}}_4\text{)}}_{\text{2}}$ nickel (II) phosphate	$\text{Hg}{\text{(PO}}_4\text{)}{}_{\text{2}}$ mercury (I) phosphate
${\text{SO}}_{\text{3}}{}^{\text{2-}}$	${{\text{(NH}}_{\text{4}}\text{)}}_{\text{2}}{\text{SO}}_{\text{3}}$ ammonium sulfite	${\text{Fe}}_{\text{2}}{{\text{(SO}}_{\text{3}}\text{)}}_{\text{3}}$ iron (III) sulfite	${\text{NiSO}}_{\text{3}}$ Nickel (II) sulfite	$\text{Hg}\text{S}{\text{O}}_{\text{3}}$ Mercury (I) sulfite
${\text{ClO}}_4{}^{\text{-}}$	${\text{NH}}_{\text{4}}{\text{ClO}}_4$ ammonium perchlorate	${\text{Fe(ClO}}_4{\text{)}}_{\text{3}}$ iron(III) perchlorate	${\text{Ni(ClO}}_4{\text{)}}_{\text{2}}$ Nickel(II) perchlorate	${\text{Hg}}_{\text{2}}{{\text{(ClO}}_4\text{)}}_{\text{2}}$ Mercury (I) perchlorate
${\text{SO}}_{\text{4}}{}^{\text{2-}}$	${{\text{(NH}}_{\text{4}}\text{)}}_{\text{2}}{\text{SO}}_{\text{4}}$ ammonium sulfate	${\text{Fe}}_{\text{2}}{{\text{(SO}}_{\text{4}}\text{)}}_{\text{3}}$ iron(III) sulfate	${\text{NiSO}}_{\text{4}}$ Nickel (II) sulfate	$\text{Hg}\text{S}{\text{O}}_{\text{4}}$ Mercury (I) sulfate
${\text{O}}^{\text{2-}}$	${{\text{(NH}}_{\text{4}}\text{)}}_{\text{2}}\text{O}$ Ammonium oxide	${\text{Fe}}_{\text{2}}{\text{O}}_{\text{3}}$ iron (III) oxide	$\text{NiO}$ Nickel (II) oxide	$\text{Hg}\text{O}$ mercury (I) oxide
${\text{Cl}}^{\text{-}}$	${\text{NH}}_{\text{4}}\text{Cl}$ ammonium chloride	${\text{FeCl}}_{\text{3}}$ iron (III) chloride	${\text{NiCl}}_{\text{2}}$ Nickel (II) chloride	${\text{Hg}}_{\text{2}}{\text{Cl}}_{\text{2}}$ mercury (I) chloride

Conclusion

Criss-cross method is used to find the formula and name of compound by balancing the charges.