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What is the name for an aqueous solution of HIO?

Published in Inorganic Acid 2 mins read

An aqueous solution of HIO is known as Hypoiodous acid.

Understanding Hypoiodous Acid (HIO/HOI)

Hypoiodous acid, represented by the chemical formulas HIO or HOI, is an intriguing inorganic compound that plays a role in iodine chemistry. When iodine dissolves in water, particularly in the presence of an oxidizing agent, hypoiodous acid can form. It is characterized as a weak acid.

Key Characteristics

  • Chemical Formula: The chemical formula for hypoiodous acid is HOI, which is structurally equivalent to HIO.
  • Appearance: Hypoiodous acid is described as a greenish-yellow solution. Its color can be subtle and might vary depending on concentration and the presence of other iodine species.
  • Nature: It is an aqueous inorganic compound, meaning it exists dissolved in water and does not contain carbon-hydrogen bonds typical of organic compounds.
  • Reactivity: As a weak acid, it partially dissociates in water. It is also known for its oxidizing properties.

Important Considerations

While hypoiodous acid exists in aqueous solutions, it is generally unstable and prone to disproportionation, meaning it can react with itself to form other iodine compounds, such as iodic acid (HIO₃) and elemental iodine (I₂). This instability means that concentrated or pure forms are difficult to isolate.

For further details on its structure and properties, you can explore resources like Byju's: HOI - Hypoiodous Acid Structure, Molecular Mass, Properties and Uses