The Enthalpy of Combustion of Table Sugar (Sucrose, C₁₂H₂₂O₁₁, 342

question 22

Multiple Choice

The enthalpy of combustion of table sugar (sucrose, C₁₂H₂₂O₁₁, 342.3 g/mol) is -5,643 kJ/mol. What is the food value (Cal/g) of sucrose? (1 Cal = 4.184 kJ)

• A) 3.94 Cal/g
• B) 11.1 Cal/g
• C) 16.5 Cal/g
• D) 2.92 Cal/g
• E) 1,350 Cal/g

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Definitions:

Ketones

Organic compounds characterized by the presence of a carbonyl group (C=O) bonded to two other carbon atoms, important in many biochemical processes and industrial applications.

Ethers

A group of organic substances identified by the presence of an oxygen atom linked to two alkyl or aryl groups.

Ester Functional Group

A chemical functional group derived from an acid where at least one –OH (hydroxyl) group is replaced by an –O– (oxy) group.

Ketone Group

A functional group in organic chemistry characterized by a carbon atom double-bonded to an oxygen atom, with two other carbon atoms attached.