Potassium Iodide (KI) Molar Mass, Structure, Properties, and Uses

Potassium iodide is an inorganic compound and this chemical formula is KI. Which is widely used in various fields, such as medicine, photography, and nuclear power plants. 

In this blog post, we have given information about the molar mass, structure, properties, and uses of potassium iodide.

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Molar Mass of Potassium Iodide

The molar mass of potassium iodide (KI) is 166.0028 g/mol. One mole of potassium iodide in it contains 166.0028 grams of the compound.

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Potassium Iodide (KI) Molar Mass, Structure, Properties, and Uses

Structure of Potassium Iodide

Potassium iodide is an ionic compound that combines with potassium cations (K+) and iodide anions (I-). The chemical formula for potassium iodide is KI. In its solid form, potassium iodide forms white crystalline cubes that have a characteristic salty taste.

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Properties of Potassium Iodide

Potassium iodide is used in various fields, such as medicine, photography, and nuclear power plants, It has several important properties that make it useful in a variety of applications.

Solubility:  Potassium iodide is highly soluble in water with a solubility of 140 g/L at 20 °C.

Melting and Boiling point: The melting point 681°C, and boiling point is 1,333°C.

Density: 3.123 g/cm³.

Crystal structure: Potassium iodide has a crystal structure that belongs to the face-centered cubic system. This structure is formed by the arrangement of potassium cations (K+) and iodide anions (I-) in a regular pattern.

Color and appearance: Potassium iodide is a white crystalline solid with a salty taste. In its pure form, it is colorless, but it turns yellow-brown when exposed to air.

pH: Aqueous solutions of potassium iodide are slightly acidic, about 6.5.

Conductivity: Potassium iodide is a good conductor of electricity when dissolved in water.

Refractive index: 1.77.

Radiation protection: Potassium iodide is used as a radiation shielder in nuclear emergencies.

Antifungal and antibacterial properties: Potassium iodide has antifungal and antibacterial properties.

The unique properties of potassium iodide make it useful in various applications, from radiation protection to antifungal and antibacterial treatment. Its stability, reactivity, and optical properties make it an important compound in fields such as medicine, photography, and nuclear power.

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Uses of Potassium Iodide

Some of the important uses of Potassium Iodide (KI) are listed below.

  1. It's used as a radiation shield in nuclear emergencies. It protects the thyroid gland from the harmful effects of radioactive iodine by saturating it with non-radioactive iodine, thereby preventing the absorption of radioactive iodine.
  2. Potassium iodide has some medical uses, such as in the treatment of hyperthyroidism, thyroid storm, and iodine deficiency.
  3.  In the photographic industry, it is used in photographic emulsifiers, which help sensitize photographic film to light.
  4. It is used as a reagent in various analytical chemistry applications.
  5. Potassium iodide is also used in veterinary medicine to treat a variety of conditions such as respiratory infections and skin conditions.
  6. Potassium iodide is added to table salt and other food products as a source of iodine.
  7. It is used as a reagent in various laboratory research applications, such as DNA extraction and protein precipitation.
  8. It is used in various industrial applications, such as dyes, pigments, and pharmaceuticals.
  9. It is used in the treatment of wastewater to remove heavy metals such as mercury and lead.
  10. It is used in the cosmetic industry as an ingredient in some skincare products.

Potassium iodide is a versatile compound with many important uses in various fields ranging from radiation protection to food fortification and industrial manufacturing. It is important to follow the recommended dosage and seek medical attention if any adverse reactions occur while using potassium iodide.

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BANTI SINGH

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