Chapter U5.103, Problem 6E

Interpretation Introduction

Interpretation: The reason of providing large energy per mole by the combustion of glucose but small energy per gram needs to be explained.

Concept introduction: Combustion reactions are used to power vehicles, heat water and homes, and create electricity. But not all combustion reactions provide the same amount of energy.

Answer to Problem 6E

1 mole of glucose has 180 gram of mass. It will provide more energy compare to 1 gram of glucose. 

Explanation of Solution

From the combustion heat is provide is directly proportional to the mass of a substance. For 1 mole of glucose has 180 gram of mass. It will provide more energy compare to 1 gram of glucose. 

Conclusion

Heat of reaction for a combustion reaction is usually referred to as the heat of combustion.