Chapter 13, Problem 71A

Interpretation Introduction

Interpretation: The volume occupied by a given mass of carbon monoxide at STP needs to be determined.

Concept introduction: Stoichiometry concepts and Avogadro’s Law are used to calculate the result.

Answer to Problem 71A

  $42\text{g}\text{C}\text{O}\text{o}\text{c}\text{c}\text{u}\text{p}{\text{y}}_{}33.6\text{L}\text{v}\text{o}\text{l}\text{u}\text{m}\text{e}$ .

Explanation of Solution

According to Avogadro’s principle,

  $\begin{array}{l}1\text{m}\text{o}\text{l}\text{C}\text{O}\text{o}\text{c}\text{c}\text{u}\text{p}\text{i}\text{e}\text{s}22.4\text{L}\text{a}\text{t}\text{S}\text{T}\text{P}\end{array}$

  $\begin{array}{c}\therefore 28\text{g}\text{C}\text{O}\text{o}\text{c}\text{c}\text{u}\text{p}\text{i}\text{e}\text{s}22.4\text{L}\text{a}\text{t}\text{S}\text{T}\text{P}\end{array}$

  $\begin{array}{c}\text{S}\text{o}42\text{g}\text{w}\text{i}\text{l}\text{l}\text{o}\text{c}\text{c}\text{u}\text{p}\text{y}=22.4\times \frac{42}{28}\end{array}$

          $\begin{array}{c}=33.6\text{L}\end{array}$

Conclusion

Thus, ${}_{}33.6\text{L}\text{v}\text{o}\text{l}\text{u}\text{m}\text{e}\text{i}\text{s}\text{o}\text{c}\text{c}\text{u}\text{p}\text{i}\text{e}\text{d}\text{b}\text{y}42\text{g}\text{C}\text{O}$ .