Combustion of a Hydrocarbon Will Release More Energy Than Combustion

question 63

Multiple Choice

Combustion of a hydrocarbon will release more energy than combustion of an equal mass of carbohydrate because

• A)the C-O and O-H single bonds in carbohydrates are weak.
• B)carbohydrates contain C-O and O-H bonds and hydrocarbons do not.
• C)the total energy of the C-C and C-H bonds in hydrocarbons is greater than the total energy of the C=O and O-H bonds in the combustion products (carbon dioxide and water).
• D)the total energy of the bonds in hydrocarbons is greater than the energy of the bonds in carbohydrates.
• E)hydrocarbons have higher molar masses than carbohydrates.

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