What is Potassium Iodate?
Potassium iodate is an oxidising agent and as such it can cause fires if in contact with combustible materials or reducing agents. The chemical formula for potassium iodate is KIO3. It can be prepared by reacting potassium base with iodic acid. Potassium iodate is the major chemical compound used for iodization of edible common salts. It provides a convenient way of performing iodimetric work. Potassium iodate is also sometimes used to precipitate thorium especially to remove it from the rare earths.
Properties of Potassium Iodate
|Density of Potassium iodate||3.89 g/cm³|
|Molecular Weight/ Molar Mass of Potassium iodate||214.001 g/mol|
|Specific gravity of Potassium iodate||4.93 g/cm3|
|Melting Point of Potassium iodate||560 °C|
|Chemical Formula of Potassium iodate||KIO3|
Potassium Iodate Structure – KIO3
Physical Properties of Potassium Iodate – KIO3
|Appearance||White crystalline powder|
|Heat capacity||313 J Kg-1 K-1|
|Hydrogen Bond Acceptor||3|
|Solubility||Soluble in KI solution insoluble in alcohol|
Chemical Properties of Potassium Iodate – KIO3
- Potassium iodate combines with potassium iodide in the presence of strong acid like sulfuric acid forms potassium sulfate, iodine and water.
KIO3 + 5KI + 3H2SO4 → 3K2SO4 + 3H2O + 3I2
- Potassium iodate reacts with silver nitrate forms silver iodate and potassium nitrate. The chemical reaction is given below.
KIO3 + AgNO3 → AgIO3 + KNO3
Uses of Potassium Iodate – KIO3
- Used in the iodination of table salt because iodide can be oxidised by molecular oxygen to iodine under wet conditions.
- Used in the analysis of testing arsenic and zinc.
- Used in the iodometry in medicine manufacturing.
- Used in food as a maturing agent and dough conditioner.
- Used as a reagent and as feed additives.
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