Chapter 8, Problem 49A

(a)

Interpretation Introduction

Interpretation :

The balanced net ionic equation must be written for the given unbalanced molecular equation.

Concept Introduction :

A net ionic equation is the representation of a reaction in which ions common to reactant and product side (spectator ions) are cancelled.

Answer to Problem 49A

Net ionic equation is given below:

  ${\text{Ag}}^{\text{+}}{\text{(aq)+Cl}}^{\text{-}}\text{(aq)}\to \text{AgCl(s)}\text{.}$

Explanation of Solution

In the reaction of HCl and AgNO₃ a precipitate of AgCl is produced. There are spectator ions H+ and NO₃- which are cancelled from both side of the equation.

b)

Interpretation Introduction

Interpretation :

The balanced net ionic equation must be written for the given unbalanced molecular equation.

Concept Introduction :

A net ionic equation is the representation of a reaction in which ions common to reactant and product side (spectator ions) are cancelled.

Answer to Problem 49A

Net ionic equation is given below:

  ${\text{3Ca}}^{\text{2+}}{\text{(aq)+2PO}}_{\text{4}}{{}^{\text{3}}}^{\text{-}}\text{(aq)}\to {\text{Ca}}_{\text{3}}{{\text{(PO}}_{\text{4}}\text{)}}_{\text{2}}\text{(s)}\text{.}$

Explanation of Solution

In the reaction of CaCl₂ and Na₃PO₄ a precipitate of Ca₃(PO₄)₂ is produced. There are spectator ions Cl- and Na+ which are cancelled from both side of the equation.

c)

Interpretation Introduction

Interpretation :

The balanced net ionic equation must be written for the given unbalanced molecular equation.

Concept Introduction :

A net ionic equation is the representation of a reaction in which ions common to reactant and product side (spectator ions) are cancelled.

Answer to Problem 49A

Net ionic equation is given below:

  ${\text{Pb}}^{\text{2+}}{\text{(aq)+2Cl}}^{\text{-}}\text{(aq)}\to {\text{PbCl}}_{\text{2}}\text{(s)}\text{.}$

Explanation of Solution

In the reaction of BaCl₂ and Pb(NO₃)₂ a precipitate of PbCl₂ is produced. There are spectator ions NO₃- and Ba²+ which are cancelled from both side of the equation.

d)

Interpretation Introduction

Interpretation :

The balanced net ionic equation must be written for the given unbalanced molecular equation.

Concept Introduction :

A net ionic equation is the representation of a reaction in which ions common to reactant and product side (spectator ions) are cancelled.

Answer to Problem 49A

Net ionic equation is given below:

  ${\text{Fe}}^{\text{3+}}{\text{(aq)+3OH}}^{\text{-}}\text{(aq)}\to {\text{Fe(OH)}}_3\text{(s)}\text{.}$

Explanation of Solution

In the reaction of FeCl₃ and NaOH a precipitate of Fe(OH)₃ is produced. There are spectator ions Cl- and Na+ which are cancelled from both side of the equation.