The presence of hypochlorous acid must be established by a chemical test, the potassium iodide-starch test.
How does potassium iodide test work?
- It is a typical experiment to use iodine to check for the presence of starch.
- A bright orange-brown hue can be seen in a solution of potassium iodide (KI) and iodine (I₂) in water.
- The hue turns deep blue when it is put to a sample that includes starch, as the bread in the preceding image.
- Plants contain the carbohydrate known as starch.
- It is made up of two different kinds of polysaccharides, each of which is composed of glucose units joined in one of two ways.
- One is called branching amylopectin, and the other is called linear amylose.
- The substance that gives the color blue is called amylose.
- Iodine can be bonded inside the helix-shaped structure that its chain takes on.
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