4. Explain what happens to a sucrose molecule when it is hydrolyzed.

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Chapter17: Carbohydrates
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Problem 17.52E
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4. Explain what happens to a sucrose molecule when it is hydrolyzed.
5. Unknown "X" forms a reddish precipitate in the Benedict's test. Is it lactose
or sucrose?
6. Unknown "Y" gives a bright red color in the Seliwanoffs test. Is it amylose
or sucrose?
7. Unknown "Z" produces a blue-black color when treated with an iodine solution.
Is it amylose or sucrose?
8. Which unknown did you use? Identify it as fructose, glucose, sucrose
or starch.
9. Explain how you could determine whether a food sample is sweetened with sucros
or with high fructose corn syrup.
Transcribed Image Text:4. Explain what happens to a sucrose molecule when it is hydrolyzed. 5. Unknown "X" forms a reddish precipitate in the Benedict's test. Is it lactose or sucrose? 6. Unknown "Y" gives a bright red color in the Seliwanoffs test. Is it amylose or sucrose? 7. Unknown "Z" produces a blue-black color when treated with an iodine solution. Is it amylose or sucrose? 8. Which unknown did you use? Identify it as fructose, glucose, sucrose or starch. 9. Explain how you could determine whether a food sample is sweetened with sucros or with high fructose corn syrup.
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