iodide

/'aiədaid/

Thân thiện

A scientist adds potassium iodide to a clear solution in a laboratory beaker.

Definition

1. Noun:
   • A chemical compound: An iodide is a salt or ester of hydriodic acid (HI). It contains the iodide ion (I⁻), which is the anion of iodine.
   • A source of iodine: In a broader chemical and nutritional context, an iodide is a compound that serves as a source of iodine, an essential element.

Usage Examples

• Noun:
  • Potassium iodide is often added to table salt to prevent iodine deficiency.
  • Silver iodide is used in cloud seeding to promote rainfall.
  • The laboratory tested for the presence of iodide ions in the solution.

Advanced Usage

• In organic chemistry: The term can refer to organic compounds where iodine is bonded to a carbon atom (alkyl or aryl iodides).
  • Methyl iodide is an example of a simple alkyl iodide.
• In medicine: Specific iodide compounds are used as expectorants or in thyroid treatment.
  • The doctor prescribed a saturated solution of potassium iodide for the cough.

Variants and Related Words

• Iodine (n): The chemical element (I) from which iodide ions are derived.
• Iodate (n): A salt containing the IO₃⁻ anion, a different iodine-oxygen compound.
• Periodide (n): A polyiodide compound containing more than one iodine atom per anion (e.g., I₃⁻).

Synonyms

• Iodide salt: Specifically emphasizes the ionic, salt form.
• Iodide compound: A more general synonym.

Related Phrases (Chemical Terminology)

• Iodide ion: The specific anion (I⁻) present in these compounds.
  • The reaction depends on the concentration of free iodide ions.
• Iodide test: A chemical test to detect the presence of iodide ions.
  • A yellow precipitate with silver nitrate indicates a positive iodide test.

Học thuật

Noun

1. a salt or ester of hydriodic acid