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How much energy is released during the formation of sucrose?
sucrose→glucose+fructose

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Final answer:

During the formation of sucrose from glucose and fructose, energy is released as a glycosidic bond is formed in a dehydration reaction. While the hydrolysis of sucrose into glucose and fructose follows first-order kinetics, the reverse reaction is thought to release a slightly lesser amount of energy than the combustion of glucose, which is 2803 kJ per mole.

Step-by-step explanation:

The energy released during the formation of sucrose from glucose and fructose is part of a dehydration reaction where a glycosidic bond is formed and a water molecule is lost. The reaction for the hydrolysis of sucrose, which is the reverse of this process, is C₁₂H₂₂O₁₁ + H₂O → C₆H₁₂O₆ (glucose) + C₆H₁₂O₆ (fructose),

This follows a first-order rate law. The energy released when one mole of glucose is combusted (which is similar to the disposal of glucose in living systems) is 2803 kJ. Since sucrose is a disaccharide of glucose and fructose when these monosaccharides combine to form sucrose, a slightly lesser amount of energy is expected to be released due to the formation of the glycosidic bond.

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