Chapter 9, Problem 111A

Complete the missing information in the following skeletion equation and balance the chemical equation:

$\text{NaOH(aq) +\_\_\_}\to {\text{3NaCl(aq) + Al(OH)}}_{\text{3}}\text{(aq)}$

Interpretation Introduction

Interpretation:

The given reaction needs to be completed and balanced.

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

Concept introduction:

Chemical equation is the symbolic description of a chemical reaction that products and reactants are indicating in terms of their chemical formula.

Answer to Problem 111A

The complete equation is as follows:

$\text{NaOH}\left(aq\right)+{\text{AlCl}}_{\text{3}}\to 3\text{NaCl}\left(aq\right)+\text{Al}{\left(\text{OH}\right)}_3\left(aq\right)$

Balance equation is as follows:

$\text{3NaOH}\left(aq\right)+{\text{AlCl}}_{\text{3}}\to 3\text{NaCl}\left(aq\right)+\text{Al}{\left(\text{OH}\right)}_3\left(aq\right)$

Explanation of Solution

Given equation is as follows:

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

To complete above equation consider what anions and cations are not represented in reactants. In equation, chloride with charge -1 and aluminum with charge +3 are missing. The complete equation is as follows:

$\text{NaOH}\left(aq\right)+{\text{AlCl}}_{\text{3}}\to 3\text{NaCl}\left(aq\right)+\text{Al}{\left(\text{OH}\right)}_3\left(aq\right)$

Sodium, hydrogen and oxygen atoms are not balanced in the reactant parts. Thus balance equation is as follows:

$\text{3NaOH}\left(aq\right)+{\text{AlCl}}_{\text{3}}\to 3\text{NaCl}\left(aq\right)+\text{Al}{\left(\text{OH}\right)}_3\left(aq\right)$

Conclusion

The complete balanced chemical equation is as follows:

$\text{3NaOH}\left(aq\right)+{\text{AlCl}}_{\text{3}}\to 3\text{NaCl}\left(aq\right)+\text{Al}{\left(\text{OH}\right)}_3\left(aq\right)$