Question

which substance make iodine solution turns blue black​

Answer 1

$Answer ✌️✌️$

Iodine - KI Reagent: Iodine is not very soluble in water, therefore the iodine reagent is made by dissolving iodine in water in the presence of potassium iodide. This makes a linear triiodide ion complex with is soluble that slips into the coil of the starch causing an intense blue-black color.

Step-by-step explanation:

Hope it helps you ✌️

Answer 2

$starch \: \: \: \:$