Chapter 12, Problem 104A

(a)

Interpretation Introduction

Interpretation: A balanced chemical equation for the equation $\text{Ba}{\left({\text{NO}}_{\text{3}}\right)}_{\text{2}}\left(aq\right)+{\text{Na}}_2{\text{SO}}_4\left(aq\right)\to {\text{BaSO}}_4\left(s\right)+{\text{NaNO}}_3\left(aq\right)$ is to be written.

Concept Introduction: The components of a chemical equation are reactants, products, and a directional arrow. For a chemical reaction to be considered "balanced," both sides of the equation must have the same number of atoms.

Answer to Problem 104A

The balanced chemical equation is as follows:

  $\text{Ba}{\left({\text{NO}}_{\text{3}}\right)}_{\text{2}}\left(aq\right)+{\text{Na}}_2{\text{SO}}_4\left(aq\right)\to {\text{BaSO}}_4\left(s\right)+2{\text{NaNO}}_3\left(aq\right)$

Explanation of Solution

The given chemical equation is as follows:

  $\text{Ba}{\left({\text{NO}}_{\text{3}}\right)}_{\text{2}}\left(aq\right)+{\text{Na}}_2{\text{SO}}_4\left(aq\right)\to {\text{BaSO}}_4\left(s\right)+{\text{NaNO}}_3\left(aq\right)$

On the right side $1$

  $\text{Na}$ atom, 2 $\text{N}$ atoms, and $10$

  $\text{O}$ atoms, and on the left side $2$

  $\text{Na}$ atoms, 1 $\text{N}$ atom, and $7$

  $\text{O}$ atoms are present in this equation. To balance this equation, put the coefficient of $2$ in front of ${\text{NaNO}}_3$ .

The balanced chemical equation is as follows:

  $\text{Ba}{\left({\text{NO}}_{\text{3}}\right)}_{\text{2}}\left(aq\right)+{\text{Na}}_2{\text{SO}}_4\left(aq\right)\to {\text{BaSO}}_4\left(s\right)+2{\text{NaNO}}_3\left(aq\right)$

(b)

Interpretation Introduction

Interpretation: A balanced chemical equation for the equation ${\text{AlCl}}_3\left(aq\right)+{\text{AgNO}}_3\left(aq\right)\to \text{AgCl}\left(s\right)+\text{Al}{\left({\text{NO}}_3\right)}_3\left(aq\right)$ is to be written.

Concept Introduction: The components of a chemical equation are reactants, products, and a directional arrow. For a chemical reaction to be considered "balanced," both sides of the equation must have the same number of atoms.

Answer to Problem 104A

The balanced chemical equation is as follows:

  ${\text{AlCl}}_3\left(aq\right)+3{\text{AgNO}}_3\left(aq\right)\to 3\text{AgCl}\left(s\right)+\text{Al}{\left({\text{NO}}_3\right)}_3\left(aq\right)$

Explanation of Solution

The given chemical equation is as follows:

  ${\text{AlCl}}_3\left(aq\right)+{\text{AgNO}}_3\left(aq\right)\to \text{AgCl}\left(s\right)+\text{Al}{\left({\text{NO}}_3\right)}_3\left(aq\right)$

On the right side $3$ $\text{Cl}$ atoms, $1$ $\text{N}$ atom, and $3$ $\text{O}$ atoms, and on the left side $1$ $\text{Cl}$ atom, $2$ $\text{N}$ atoms and $6$ $\text{O}$ atoms are present in this equation. To balance this equation, put the coefficient of $3$ in front of ${\text{AgNO}}_3$ and $\text{AgCl}$ .

The balanced chemical equation is as follows:

  ${\text{AlCl}}_3\left(aq\right)+3{\text{AgNO}}_3\left(aq\right)\to 3\text{AgCl}\left(s\right)+\text{Al}{\left({\text{NO}}_3\right)}_3\left(aq\right)$

(c)

Interpretation Introduction

Interpretation: A balanced chemical equation for the equation ${\text{H}}_2{\text{SO}}_4\left(aq\right)+\text{Mg}{\left(\text{OH}\right)}_2\left(aq\right)\to {\text{MgSO}}_4\left(aq\right)+{\text{H}}_{\text{2}}\text{O}\left(l\right)$ is to be written.

Concept Introduction: The components of a chemical equation are reactants, products, and a directional arrow. For a chemical reaction to be considered "balanced," both sides of the equation must have the same number of atoms.

Answer to Problem 104A

The balanced chemical equation is as follows:

  ${\text{H}}_2{\text{SO}}_4\left(aq\right)+\text{Mg}{\left(\text{OH}\right)}_2\left(aq\right)\to {\text{MgSO}}_4\left(aq\right)+2{\text{H}}_{\text{2}}\text{O}\left(l\right)$

Explanation of Solution

The given chemical equation is as follows:

  ${\text{H}}_2{\text{SO}}_4\left(aq\right)+\text{Mg}{\left(\text{OH}\right)}_2\left(aq\right)\to {\text{MgSO}}_4\left(aq\right)+{\text{H}}_{\text{2}}\text{O}\left(l\right)$

On the right side $4$ $\text{H}$ atoms and $6$ $\text{O}$ atoms and on the left side $2$ $\text{H}$ atoms, and $5$ $\text{O}$ atoms are present in this equation. To balance this equation, put the coefficient of $2$ in front of ${\text{H}}_{\text{2}}\text{O}$ .

The balanced chemical equation is as follows:

  ${\text{H}}_2{\text{SO}}_4\left(aq\right)+\text{Mg}{\left(\text{OH}\right)}_2\left(aq\right)\to {\text{MgSO}}_4\left(aq\right)+2{\text{H}}_{\text{2}}\text{O}\left(l\right)$