Solution of Iodine commonly known with the solution of the drug. However in other Quantitative analysis of Chemical material, which has the formula I2 Iodine indeed, but if it is only dissolved in water, it will be difficult to dissolve or difficult to dissolve. If any insoluble, it takes a relatively long time. Usually the creation of a solution of Iodine often added helper substances i.e. KI (Potassium Iodide). so this solution finally has a formula of the compound KI3.
Here's how to make:
-Carefully Weigh as much as 12, 90 grams of Iodine (I2) + 18.00 grams of Potassium Iodide (KI) and dissolve in 200 ml of water. After all the soluble, dilute iodine solution with water to 1000 ml solution.
This solution is used as the default solution in titration in Iodine Methods .