Chapter 11.2, Problem 15SP

(a)

Interpretation Introduction

Interpretation: To determine the balance of chemical reactions.

Concept Introduction: When more than one atom or molecule will get reacted with each other, they will form a different kind of atom or molecule. This process is named a chemical reaction.

Answer to Problem 15SP

The balanced complete reaction will be ${\text{Fe + 2PbNO}}_{\text{3}}\to \text{ Fe}{\left({\text{NO}}_{\text{3}}\right)}_{\text{2}}\text{ + 2Pb}$

Explanation of Solution

The complete reaction is given as

  ${\text{Fe + PbNO}}_{\text{3}}\to \text{ Fe}{\left({\text{NO}}_{\text{3}}\right)}_{\text{2}}\text{ + Pb}$

In the above reaction, on the reactant side, we have 1 iron atom, 1 lead atom, and 1 nitrate molecule while on the product side 1 iron atom, 1 lead atom, and 2 nitrate molecules.

If multiply ${\text{PbNO}}_{\text{3}}$ 2 by on the reactant side and 2 by Pb on the product side, the balanced chemical equation:

  ${\text{Fe + 2PbNO}}_{\text{3}}\to \text{ Fe}{\left({\text{NO}}_{\text{3}}\right)}_{\text{2}}\text{ + 2Pb}$

(b)

Interpretation Introduction

Interpretation: To determine the balance of chemical reactions.

Concept Introduction: When more than one atom or molecule will get combined, they will form a different kind of atom or molecule. This process is named a chemical reaction.

Answer to Problem 15SP

No reaction

Explanation of Solution

Chlorine will not displace iodine from NaI, so, a reaction will occur.

(c)

Interpretation Introduction

Interpretation: To determine the balance of chemical reactions.

Concept Introduction: When more than one atom or molecule will get combined, they will form a different kind of atom or molecule. This process is named a chemical reaction.

Answer to Problem 15SP

\ The balanced complete reaction will be ${\text{Ca + 2H}}_{\text{2}}\text{O }\to \text{Ca}{\left(\text{OH}\right)}_{\text{2}}{\text{ + H}}_{\text{2}}$

Explanation of Solution

The complete reaction is given as:

  ${\text{Ca + H}}_{\text{2}}\text{O }\to \text{Ca}{\left(\text{OH}\right)}_{\text{2}}{\text{ + H}}_{\text{2}}$

In the above reaction, the reactant side has 1 calcium atom, 1 oxygen atom, and 2 hydrogen atoms while the product side has 1 calcium atom, 2 oxygen atoms, and 4 hydrogen atoms.

If multiply 2 to H₂O on the reactant side, the reaction will be balanced.

  ${\text{Ca + 2H}}_{\text{2}}\text{O }\to \text{Ca}{\left(\text{OH}\right)}_{\text{2}}{\text{ + H}}_{\text{2}}$

(d)

Interpretation Introduction

Interpretation: To determine the balance of chemical reactions.

Concept Introduction: When more than one atom or molecule will get combined, they will form a different kind of atom or molecule. This process is named a chemical reaction.

Answer to Problem 15SP

The balanced complete reaction will be ${\text{Zn + H}}_{\text{2}}{\text{SO}}_{\text{4}}\to {\text{ ZnSO}}_{\text{4}}{\text{ + H}}_{\text{2}}$

Explanation of Solution

The complete reaction is given as:

  ${\text{Zn + H}}_{\text{2}}{\text{SO}}_{\text{4}}\to {\text{ ZnSO}}_{\text{4}}{\text{ + H}}_{\text{2}}$

In this reaction, the number of atoms on the reactant side and product, side are equal. So, the above reaction is balanced.