Chapter 12, Problem 68A

Interpretation Introduction

Interpretation: To calculate the total number of liters of gas.

Concept Introduction: A mole is $6.02\times {10}^{23}$ atoms/molecules. The SI unit for the amount of substance is a mole and it is represented by “mol”.

The coefficients are the numbers that are written in front of the chemical formula/symbol in order to balance a chemical reaction.

Answer to Problem 68A

The total number of liters of nitrogen monoxide gas is $1.12\text{ L}$ .

Explanation of Solution

The given chemical reaction is depicted as follows:

  ${\text{4NH}}_3\left(g\right)+5{\text{O}}_2\left(g\right)\to 4\text{NO}\left(g\right)+6{\text{H}}_2\text{O}\left(l\right)$

When four moles of ammonia react with five moles of oxygen it yields four moles of nitrogen monoxide and six moles of water.

The liters of oxygen is $1.40\text{ L}$ .

Therefore, liters of nitrogen monoxide can be calculated as follows:

  $1.40\cancel{{\text{L O}}_2}\times \frac{1\cancel{{\text{mol O}}_2}}{\cancel{\text{22}\text{.4}}\cancel{{\text{L O}}_2}}\times \frac{4\cancel{\text{mol NO}}}{5\cancel{{\text{mol O}}_2}}\times \frac{\cancel{\text{22}\text{.4}}\text{ L NO }}{1\cancel{\text{mol NO}}}=1.12\text{ L NO}$

Conclusion

Thus, the total number of liters of nitrogen monoxide gas is $1.12\text{ L}$ .