Organic solvents with densities greater than and less than that of the aqueous solution are used to extract the iodine. The aqueous solution of food color is blue. Iodine in water is yellow, and when ...

A lack of natural iodine in the soil and water, and an iodine-poor diet, led to the "characteristic neck swellings": enlarged thyroid glands. But after iodine supplements were shown to help ...

The reaction between iodate and bisulfite in acid medium produces iodine. Solutions A (iodate ... reaction from the instant of mixing to the appearance of the dark blue color. 3. Mix the two solutions ...