| Videos: 4 results |
Benedict's Test for Reducing Sugars
Tests for glucose, sucrose, and fructose.
Carbohydrates |
Oxidation / Reduction |
Qualitative Analysis
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Carbohydrates
Dehydration of sucrose, Fehling's test, Benedict's test, osazone formation, destructive distillation of wood, oxidation of sucrose with potassium chlorate, and guncotton are demonstrated.
Carbohydrates
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Sucrose Dehydration gives Sulfur Dioxide
Sulfuric acid dehydrates sucrose forming carbon.
Carbohydrates |
Oxidation / Reduction |
Reactions
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Formation of Carbon from Carbohydrate
Sulfuric acid has a very high affinity for water. It is shown to dehydrate a carbohydrate (sucrose) forming carbon. Sulfuric acid is reduced to sulfur dioxide, which bleaches a rose petal.
In a second experiment, the sulfur dioxide reduces purple permanganate to nearly colorless manganese(II).
Acids / Bases |
Carbohydrates |
Oxidation / Reduction |
Reactions
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