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Why does glycogen change to red when iodine solution is added?
Wiki User
∙ 10y ago
Iodine tests for complex sugars. Glycogen is a complex sugar and will change dark purple when iodine solution is added (color is irrelevant, all you really need to know is that the change to a specific color signifies a presence of a macro molecule)
Wiki User
∙ 10y ago
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What is the organic compound that reacts when iodine is added to starch solution?
starch
What color would you see if iodine solution is added to starch?
A deep blue colour
Why KI is to be added to prepare to prepare iodine solution?
KI is potassium iodide, you'd react it with something to produce iodine ions. It reacts as reducing agent
Describe a solution that contains a buffer?
Acetic acid is added to the solution, but the pH of the solution does not change. Sodium hydroxide, a base, is added to the solution, but the pH of the solution does not change.
Is iodine and water heterogeneous mixture?
Iodine is much more soluble in ethanol than in water, so it will usually form a homogeneous mixture. Of course, if you add more solid iodine than will dissolve in your quantity of ethanol at the temperature at which you are working, the excess solid will sink to the bottom. In that case, you have a heterogeneous mixture.
Why glycogen gives red colour with iodine?
When Iodine is added to amylose, the helical shape of the unbranched polysaccharide traps Iodine molecules, producing a deep blue-black complex. Amylopectin, cellulose, and Glycogen react with iodine to give red to brown colors. Glycogen produces a reddish-purple color.
What normally happens when iodine solution is added to starch?
it will change into blue black colours.
Why does a sugar solution turn brown when Iodine is added?
Because Iodine is a brown element.
What color develops when iodine solution is added to starch solution?
Yellowish brown.
What is the organic compound that reacts when iodine is added to starch solution?
starch
What is the role of potassium iodide in the formulation of strong iodine solution?
The role of KI in the preparation of strong iodine solution is to enhance the solubility of iodine crystals in water. Iodine is generally not soluble in water. The KI is added to help the iodine to be dissolved. -College Chemistry professor
What does lugol's iodine?
it is iodine and potassium iodide solution It's a orange colored solution that consists of Iodine and Potassium Iodide and is used to test a substance for starch. If the color of the solution turns black when put on/in the substance, then the substance is positive for starch.
When potassium iodine solution is added to a solution of lead nitrate in a test tube what will be the compound precipitate?
Lead iodide.
What happens when iodine is added to a starch solution?
When iodine is added to starch it turns a blackish color due to a chemical reaction.
What color would you see if iodine solution is added to starch?
A deep blue colour
which of the following best describes a solution that contains a buffer?
sodium hydroxide, a base, is added to the solution, but the pH of the solution does not change.
Why KI is to be added to prepare to prepare iodine solution?
KI is potassium iodide, you'd react it with something to produce iodine ions. It reacts as reducing agent
