The colour expected would be Black, as a reaction between the iodine and potato starch occurs to give a black complex.
iodine solution
If you add iodine to a potato, the iodine will react with the starch present in the potato. This reaction will result in a color change, turning the potato a blue-black color where starch is present. This can be used as a test to detect the presence of starch in foods.
If the iodine on/in the potato turns dark blue/purple/black, it means the iodine has reacted to the starch in the potato and has changed color.
It is an easily reversible chemical reaction known as a redox reaction.The blue color is due to blue color is due to I2+ cation. The iodine has been oxidized by an oxidizing agent. It can be reduced back to I2 in the reverse reaction.
The potato will turn blue, purple, or black as the iodine reacts to the starch in the potato.
When iodine is placed in potato juice it turns dark purple to black. It's the starch in potatoes that reacts with the iodine.
Baked postato contains 60 mcg of iodine. However, the amount of iodine will be different if the potatoes were grown in soil that was iodine-depleted:)
Potato eyes on a potato are just the roots of the potato growing out. They injdicate that a potato is old, and has not been freshly harvested. Potato eyes on a human just refer to swollen eyes - usually meanig that he/she has ben crying!
Starch is present. Check a potato with iodine.
Use concentrated Iodine, If parts of the potato turn blue-black, there is starch present.=Be careful - iodine is an irritant.==OBVIOUSLY, Don't eat the potato afterwards!=
This is evidence of the presence of starch in the potato or corn. Iodine reacts with starch, forming a dark blue to black color, which can be a qualitative test for the presence of starch in food or other materials.
The iodine solution will turn dark blue or black in the presence of starch in the potato slice. This is because iodine reacts with starch, forming a blue-black complex. It's a common test for the presence of starch in foods.