Question

Tincture of iodine is:
A. Aqueous solution of ${I_2}$
B. Solution of ${I_2}$ in aqueous $KI$
C. Alcohol solution of ${I_2}$
D. Aqueous solution of $KI$

Answer 1

Hint: In the tincture of iodine, the solvent is alcohol and water while solute is iodine. Iodine tincture is also known as a weak iodine solution or iodine tincture.

Complete step by step answer:
We know that tincture of iodine, tincture of iodine, or weak iodine solution is an antiseptic. It is usually $2 - 7\%$ elemental iodine with potassium iodide or sodium iodide, which dissolves in a mixture of ethanol and water.
-Tincture solutions are characterized by the presence of alcohol. It was used in pre-operative skin preparation by surgeon Antonio Grossich from $1908$.
-Small amounts of suspected water sources can usually be introduced as $5 mg$ of free iodine per liter of disinfectant or $5$ drops of $2$ percent tincture. While this process works against viruses and bacteria.
-Iodine tinctures are being used to kill viruses and bacteria and to clean the surfaces of vegetables and fruits. The developing sanitizing concentration is $25 ppm$ ideal for $1$ minute.
-Tincture of iodine is also available in medical emergency kits, which are used for disinfection of cuts and intake of surface water.
Hence, the correct option is A.

Note: In the tincture of iodine, the solvent is alcohol and water while solute is iodine. Iodine tincture is also known as a weak iodine solution or iodine tincture. Iodine tincture is an antiseptic that is used to disinfect wounds. The composition of iodine tincture is $2 to 7\%$ of iodine and the rest is sodium or potassium iodide.