5 Questions
What is the purpose of the iodine test?
To detect the presence of starch
What color does the iodine-iodide mixture turn when it interacts with helical amylose in the presence of starch?
Deep blue
Which two components make up the starch, a plant carbohydrate?
Amylose and amylopectin
What color does the iodine-iodide mixture have in an aqueous solution?
Light orange-brown
Which type of polysaccharide is amylopectin?
Branched
Study Notes
Starch and Iodine Test
- The purpose of the iodine test is to detect the presence of starch in a substance.
Composition of Starch
- Starch, a plant carbohydrate, consists of two components: amylose and amylopectin.
Iodine Test Reaction
- When iodine-iodide mixture interacts with helical amylose in the presence of starch, it turns blue-black in color.
Characteristics of Iodine-Iodide Mixture
- In an aqueous solution, the iodine-iodide mixture has a brown color.
Type of Polysaccharide
- Amylopectin is a type of branched polysaccharide.
Test your knowledge of the iodine test for starch detection with this quiz. Explore the chemistry behind the test and learn how iodine reacts with starch to produce a characteristic color change.
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