What color does Benedict's solution remain when no reducing sugar is present after heating?

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Prepare for the PLTW Biomedical Science Test. Study with flashcards and multiple choice questions, each question comes with hints and explanations. Get ready for your exam!

Multiple Choice

What color does Benedict's solution remain when no reducing sugar is present after heating?

Explanation:
Benedict's test works by reducing copper(II) in the reagent to copper(I) oxide when reducing sugars are present. That redox reaction changes the solution's color from blue toward green, yellow, orange, or brick red, depending on how much sugar is there. If no reducing sugar is present, no reduction happens, so the solution stays the original blue color. In this item, the description “remains light blue” matches that unchanged blue color when nothing to reduce is present.

Benedict's test works by reducing copper(II) in the reagent to copper(I) oxide when reducing sugars are present. That redox reaction changes the solution's color from blue toward green, yellow, orange, or brick red, depending on how much sugar is there. If no reducing sugar is present, no reduction happens, so the solution stays the original blue color. In this item, the description “remains light blue” matches that unchanged blue color when nothing to reduce is present.

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