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Benedict's Test and Ketohexose

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The Managing Director of a well-known company on Wall Street thrives on a diet of fruit jam, bread, pasta, and coffee. She exercises intermittently. One day she decides to go to her primary health-care provider for a routine checkup. The health-care provider recommends that she take the Benedict's test. Assume that the glucose levels of the patient are high.

* State the results that the test would indicate (specify the color of the solution).

* State the composition and the properties of the ketohexose derived from fruit jam.

* Describe the manner in which ketohexose acts as a reducing sugar in the test.

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Solution Preview

Since the glucose will reduce the Benedict's reagent from blue copper (Cu(II)) to precipitates of cuprous (Cu(I)) oxide which is red o dark orange, the color of the resulting solution is RED or DARK ORANGE. That is the reason why glucose is ...