Chapter 11.1, Problem 5SP

(a)

Interpretation Introduction

Interpretation: The given reactions are to be balanced.

Concept Introduction : According to the law of conservation of mass, the mass can neither be created nor to be destroyed. Every reaction must be balanced.

Answer to Problem 5SP

The balanced equation is ${\text{FeCl}}_3+3\text{NaOH}\to \text{Fe}{\left(\text{OH}\right)}_{\text{3}}+3\text{NaCl}$ .

Explanation of Solution

The unbalanced equation is given as:

  ${\text{FeCl}}_3+\text{NaOH}\to \text{Fe}{\left(\text{OH}\right)}_{\text{3}}+\text{NaCl}$

The co-efficient of 3 is placed before $\text{NaOH}$ and $\text{NaCl}$ . The balanced equation is:

  ${\text{FeCl}}_3+3\text{NaOH}\to \text{Fe}{\left(\text{OH}\right)}_{\text{3}}+3\text{NaCl}$

(b)

Interpretation Introduction

Interpretation: The given reactions are to be balanced.

Concept Introduction : According to the law of conservation of mass, the mass can neither be created nor to be destroyed. Every reaction must be balanced.

Answer to Problem 5SP

The balanced equation is ${\text{CS}}_{\text{2}}+3{\text{Cl}}_{\text{2}}\to {\text{CCl}}_4+{\text{S}}_{\text{2}}{\text{Cl}}_2$ .

Explanation of Solution

The unbalanced equation is given as:

  ${\text{CS}}_{\text{2}}+{\text{Cl}}_{\text{2}}\to {\text{CCl}}_4+{\text{S}}_{\text{2}}{\text{Cl}}_2$

The co-efficient of 3 is placed before ${\text{Cl}}_{\text{2}}$ . The balanced equation is:

  ${\text{CS}}_{\text{2}}+3{\text{Cl}}_{\text{2}}\to {\text{CCl}}_4+{\text{S}}_{\text{2}}{\text{Cl}}_2$

(c)

Interpretation Introduction

Interpretation: The given reactions are to be balanced.

Concept Introduction : According to the law of conservation of mass, the mass can neither be created nor to be destroyed. Every reaction must be balanced.

Answer to Problem 5SP

The balanced equation is $\text{2KI}+\text{Pb}{\left({\text{NO}}_{\text{3}}\right)}_2\to {\text{PbI}}_2+2{\text{KNO}}_{\text{3}}$ .

Explanation of Solution

The unbalanced equation is given as:

  $\text{KI}+\text{Pb}{\left({\text{NO}}_{\text{3}}\right)}_2\to {\text{PbI}}_2+{\text{KNO}}_{\text{3}}$

The co-efficient of 2 is placed before $\text{KI}$ and ${\text{KNO}}_{\text{3}}$ . The balanced equation is:

  $\text{2KI}+\text{Pb}{\left({\text{NO}}_{\text{3}}\right)}_2\to {\text{PbI}}_2+2{\text{KNO}}_{\text{3}}$

(d)

Interpretation Introduction

Interpretation: The given reactions are to be balanced.

Concept Introduction : According to the law of conservation of mass, the mass can neither be created nor to be destroyed. Every reaction must be balanced.

Answer to Problem 5SP

The balanced equation is ${\text{2C}}_{\text{2}}{\text{H}}_{\text{2}}+5{\text{O}}_{\text{2}}\to 4{\text{CO}}_2+2{\text{H}}_{\text{2}}\text{O}$ .

Explanation of Solution

The unbalanced equation is given as:

  ${\text{C}}_{\text{2}}{\text{H}}_{\text{2}}+{\text{O}}_{\text{2}}\to {\text{CO}}_2+{\text{H}}_{\text{2}}\text{O}$

The co-efficient of 2 is placed before ${\text{C}}_{\text{2}}{\text{H}}_{\text{2}}$ , ${\text{H}}_{\text{2}}\text{O}$ and 5 is placed before ${\text{O}}_{\text{2}}$ , and 4 is placed before ${\text{CO}}_2$ . The balanced equation is:

  ${\text{2C}}_{\text{2}}{\text{H}}_{\text{2}}+5{\text{O}}_{\text{2}}\to 4{\text{CO}}_2+2{\text{H}}_{\text{2}}\text{O}$