Identifying Carbohydrates Lab Report

Topics: Glucose, Sucrose, Carbohydrate Pages: 2 (256 words) Published: November 27, 2012
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Identifying Carbohydrates
(First inital and last name of lab partner)
The purpose of this lab is to learn how to identify different forms of carbohydrates by conducting the Benedict and Iodine test. Theory
The theory for this concept is that if in the benedicts test the carbohydrate reacts, it is a monosaccharide. If it reacts in the Iodine test it is a polysaccharide. If no reaction occurs in either test the carbohydrate is a disaccharide. Data

Type of carbohydrate| Benedicts Test| Iodine Test|
Monosaccharide| R| NR|
Disaccharide| NR| NR|
Polysaccharide| NR| R|

Solution| Bendicts Test| Iodine Test|
Honey| R| NR|
Oats| NR| R|
Table Sugar| NR| NR|
Apple Juice| R| NR|
Powdered Sugar| NR| NR|

Solution| Type of carbohydrate|
Honey| Monosaccharide|
Oats| Polysaccharide|
Table Sugar| Disaccharide|
Apple juice| Monosaccharide|
Powdered Sugar| Disaccharide|

I found that honey reacted with the Benedicts test, so it must be a monosaccharide. Oats did not react with the Benedicts test, but did react with the Iodine test; so it is a polysaccharide. Both the table sugar and the powdered sugar reacted with neither tests, so they are both disaccharides. Lastly, the apple juice reacted with the Benedicts test so it is a monosaccharide.

1) It could be a Polysaccharide or a Disaccharide.
2) It could be a Disaccharide or a Monosaccharide.
3) This would be a monosaccharide.
4) This would be a Disaccharide.
5) They originally came from producers.
6) The chemical formula is Cx(H2Oy)

8)C12 H22 O11
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