Chapter 11, Problem 116A

Interpretation Introduction

Interpretation:

The common pollutants and reactions due to combustion of gasoline in internal combustion engine needs to be determined and strategy to reduce pollutant with stoichiometry needs to be explained.

Concept introduction:

The combustion reaction is an exothermic reaction which is the reaction of molecule with oxygen to form carbon dioxide and water. The energy released during the combustion is called as enthalpy of combustion.

Answer to Problem 116A

Some common pollutant gases are ${\text{SO}}_{\text{2}}{\text{, NO}}_{\text{2}}{\text{, O}}_{\text{3}}\text{ and NO}$ gases.

The mass transit can reduce the use of gasoline that directly reduce the release of pollutant. It can show with stoichiometry as:

1 mole of gasoline = 1 vehicle

Explanation of Solution

The combustion of gasoline occurs in the presence of oxygen and leads to the formation of carbon dioxide and water with several other pollutants. Some common pollutant gases are ${\text{SO}}_{\text{2}}{\text{, NO}}_{\text{2}}{\text{, O}}_{\text{3}}\text{ and NO}$ gases.

The mass transit can reduce the use of gasoline that directly reduce the release of pollutant. It can show with stoichiometry as:

1 mole of gasoline = 1 vehicle

So as the number of vehicles will decrease with mass transit, it will decrease the combustion of gasoline also.

Conclusion

Mole ratio is used to show the relation between use of gasoline and number of vehicle.