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What exactly is Benedict's solution? I understand that it is used for glucose, but how...

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jcarrol | Student, Grade 11 | eNoter

Posted September 30, 2012 at 3:13 PM via web

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What exactly is Benedict's solution? I understand that it is used for glucose, but how does it test it?

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trophyhunter1 | College Teacher | (Level 3) Senior Educator

Posted September 30, 2012 at 6:35 PM (Answer #1)

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Named for Stanley Rossiter Benedict, this chemical is used to test for the presence of sugar in a solution. It is known as a chemical indicator. It contains copper sulfate and it will react with reducing sugars to produce a color change. To test a substance for sugar, one heats the food sample which is dissolved in water. Add a small amount of Benedict's solution. Between 4 and 10 minutes a color change occurs if sugar is present. Green, yellow, orange, red and brick red indicate solutions ranging from slight sugar--green color to a brick red color for high amounts of glucose.If no sugar was present, the color would remain blue.

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